Revision 7T · Full Tutorial Edition · Updated 1 September 2026
PWR-051 · SUPERVISED full tutorial
Move sleep timing by placing light and daily anchors on the correct side of the clock
Circadian timing can shift, but direction and benefit depend on when, for whom and toward what schedule. Circadian alignment requires a target schedule and correct timing. The learner first maps sleep, light and activity, then follows a provider-selected phase-advance or phase-delay plan. Light at the wrong biological time can move the clock the wrong way; medication and melatonin remain clinician-controlled.
What you will produceThe learner completes a 14-day timing record and follows a provider-set light and wake schedule with adherence, sleep timing and daytime function measured.
Method8 numbered Power-specific steps
Practice authorityFull method with qualified supervision where stated
Full step-by-step individual tutorial · TLU-PWR-051
The learner completes a 14-day timing record and follows a provider-set light and wake schedule with adherence, sleep timing and daytime function measured.
Complete the 14-day sleep/light/activity diary, write the earlier-or-later target and rehearse one provider-written day of cue timing.
Use the approved wake anchor, light window, light-avoidance window, activity/meal anchors and increment exactly as written.
Record adherence, sleep timing, mood, headache, eye symptoms, sleepiness and work/school function each day.
Qualified help is required for
Determining advance versus delay and screening bipolar disorder, eye disease, photosensitivity, migraine, medication and shift-work constraints.
Selecting light timing, intensity, distance, duration, avoidance window, schedule increment and whether an objective phase marker is needed.
Starting or retiming melatonin/medicine and interpreting persistent non-shift, mood change, eye symptoms or dangerous sleepiness.
Never do this from the page alone
Improvise high-intensity light, stare into a lamp, reverse the prescribed window or use an all-nighter to force a shift.
Start, stop or retime melatonin, sedatives, stimulants or other medicine from the diary alone.
Keep advancing/delaying through mood elevation, sharply reduced sleep need, eye pain, visual change, severe headache or unsafe daytime function.
2 · Get ready
Gather what you need and check the starting conditions
What you need
A 14-day sleep, light, activity and symptom diary.
The target sleep and wake schedule tied to work, school or care needs.
A provider-approved light source, outdoor-light plan or light-avoidance aid.
A clock and alarms accessible to the learner.
Before you start
A qualified provider determines whether the goal is to advance earlier or delay later and screens bipolar disorder, eye disease, photosensitivity, migraine, medications and shift-work constraints.
Do not buy or improvise high-intensity light exposure without a plan for intensity, distance and duration.
Do not start or retime melatonin or sedating/stimulating medicine from this lesson.
Agree stop rules for mood elevation, eye symptoms, severe headache, worsening sleepiness or unsafe function.
3 · The method
Follow these steps in order
Name the target phase
Write the required sleep and wake times and whether the current pattern needs to move earlier or later.
Why: “Better sleep” is not a timing direction.
Check: The plan shows a clock-time target and direction.
Map fourteen days
Record sleep attempt, estimated sleep, final wake, naps, outdoor/bright light, exercise, meals, work and symptoms.
Why: Timing patterns and social constraints must be visible before intervention.
Check: At least fourteen dated days use the same fields.
Select the phase cue with the provider
The provider chooses the timing, intensity, distance and duration of light or light avoidance, using clinical phase information when needed.
Why: The same light can advance or delay the circadian clock depending on timing.
Check: The prescription states when, how bright, how close and how long.
Anchor the wake period
Rise within the agreed window and use the provider-selected light, activity and meal anchors in the planned order.
Why: A stable cluster of morning or evening cues strengthens the intended schedule.
Check: The diary shows whether each anchor occurred in its window.
Block the opposite cue
Use the agreed dim-light or light-avoidance step at the time that would oppose the intended shift.
Why: Unplanned bright light can cancel or reverse the desired movement.
Check: The learner can name which light window is being protected and why.
Shift in provider-set increments
Move schedule cues only by the amount and frequency in the written plan; keep naps inside the agreed rule.
Why: Large jumps can worsen sleep loss and adherence.
Check: No unscheduled jump or all-nighter is used.
Record response and adverse effects
Each day record sleep timing, sleepiness, mood, headache, eye symptoms and real-world function.
Why: Clock change is not worthwhile if safety, mood or function worsens.
Check: The response record includes both timing and burden.
Review and verify
After the set interval, the provider compares the diary with the target and decides whether objective phase testing or plan adjustment is needed.
Why: Sleep time is an imperfect proxy for internal circadian phase.
Check: The conclusion says aligned, partly shifted, unchanged or unsafe—not “clock reset”.
4 · Worked example
See the whole method used once
Scenario
Sam’s sleep is consistently 02:30–10:30, but a new class requires a 07:30 wake. A sleep clinician plans a gradual advance.
Walkthrough
Sam records fourteen baseline days of sleep, morning light, evening screens, meals and mood.
The clinician sets a 07:30 wake anchor, prescribed morning light window and earlier dim-light period.
Sam changes cues only by the written increment and does not use an all-nighter.
Daily records show wake time, adherence, headache, sleepiness and class function.
At review, the clinician sees a partial earlier shift without mood symptoms and sets the next increment.
Result
The plan moves timing toward a declared schedule under supervision. It does not prove a measured biological phase without an appropriate phase marker.
5 · Right and wrong
Compare correct or safer execution with the common wrong version
Right and wrong comparison
Moment
Right / safer
Wrong / riskier
Why it matters
Direction
Write “advance earlier” or “delay later” before placing light.
Use bright light whenever convenient.
Timing determines the direction of circadian effect.
Dose
Follow specified intensity, distance, duration and clock window.
Sit close to an unverified lamp for longer to accelerate change.
Uncontrolled light can cause symptoms and an unintended phase shift.
Schedule change
Use gradual provider-set increments.
Use an all-nighter or abrupt multi-hour jump.
Abrupt sleep loss adds impairment and obscures the phase response.
Medication
Discuss melatonin and medicines with a clinician.
Self-select dose and timing from a generic chart.
Timing, interaction and contraindication matter.
Outcome
Measure target timing plus mood, sleepiness and function.
Call an earlier bedtime proof of circadian alignment.
Behavioural timing is not identical to internal phase.
6 · Common mistakes
Spot the error and apply the correction
Common mistakes and corrections
Mistake
Fix
Use bright light whenever convenient.
Write “advance earlier” or “delay later” before placing light.
Sit close to an unverified lamp for longer to accelerate change.
Follow specified intensity, distance, duration and clock window.
Use an all-nighter or abrupt multi-hour jump.
Use gradual provider-set increments.
Self-select dose and timing from a generic chart.
Discuss melatonin and medicines with a clinician.
Call an earlier bedtime proof of circadian alignment.
Measure target timing plus mood, sleepiness and function.
7 · Practice
Turn the steps into a usable skill
First session
Sam and the sleep clinician plot 14 baseline days showing the 02:30–10:30 pattern against the required 07:30 class-day wake time and label the goal ‘advance earlier’.
They copy onto one timing card: 07:30 wake anchor; provider-written light start/end, intensity, distance and duration; dim-light start; activity/meal anchors; schedule increment; review date; and symptom stops.
Using a clock-face sheet, Sam points through wake, approved light, activity/meal anchors and opposite-light avoidance in order and explains which window supports the advance.
Sam begins only the first written increment and records actual sleep, light-window adherence, mood, headache, eye symptoms, sleepiness and class function the next day.
The same card is followed daily until the scheduled review; no further increment, light-dose change or medication timing change is made independently.
Repeat plan
Follow the prescribed daily timing until review, commonly over one to two weeks. Change only the provider-named cue or increment. Objective phase testing and medication decisions remain clinical.
Progress when
Wake and light anchors are followed consistently.
Sleep timing moves toward the declared target without accumulating dangerous sleep loss.
Mood, eye comfort, headache and daytime function remain acceptable.
Do not progress when
Mood becomes unusually elevated, agitated or sleepless.
Eye pain, visual symptoms, severe headache or photosensitive symptoms occur.
The schedule creates drowsy driving, work risk or worsening impairment.
8 · Check the result
Measure what changed
Change in verified circadian phase plus sleep and real-world function relative to a declared target
How: Plot daily sleep midpoint and final wake relative to the target; add adherence to each light window, sleepiness, mood and function. Treat device sleep estimates as supportive only.
Good result: Timing approaches the target across at least one week and daytime function is maintained; the provider confirms the plan remains appropriate.
This does not prove: Clock time, chronotype questionnaires, actigraphy and DLMO are not interchangeable; phase alignment requires a declared target schedule.
Self-check
Can you demonstrate “Map fourteen days”? At least fourteen dated days use the same fields.
Can you demonstrate “Block the opposite cue”? The learner can name which light window is being protected and why.
Can you demonstrate “Review and verify”? The conclusion says aligned, partly shifted, unchanged or unsafe—not “clock reset”.
9 · Stop, adapt or get help
Keep the safety boundary practical
Stop and get help
Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
Do not drive or do hazardous work when the schedule change causes involuntary sleep or attention lapses.
Seek clinical reassessment when timing does not shift, symptoms worsen or a medicine/health change alters the plan.
Accessibility and adaptations
Use an approved light source and distance compatible with visual, mobility and sensory needs.
Provide audio alarms and a supporter-assisted cue sequence when time tracking is difficult.
Adapt work, meal and activity anchors to caregiving, disability and cultural routines rather than assuming one schedule.
10 · Evidence and limits
Why these instructions are here
primary research
Primary research shows that phase shifts from a timed cue can vary with chronotype, supporting person- and timing-specific plans.
Evan D Chinoy; Joseph A Cuellar; Kirbie E Huwa; Jason T Jameson; Catherine H Watson; Sara C Bessman; Dale A Hirsch; Adam D Cooper; Sean P A Drummond; Rachel R Markwald · 2021 · Primary research
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Step-by-step learner mode
Each activity includes its success check, a nearby accessible alternative and an “I’m stuck” correction path. Alternatives preserve the target where possible; when they change the task, Titan labels them as related rather than equivalent.
01
Name the target phase
Write the required sleep and wake times and whether the current pattern needs to move earlier or later.
Why this step exists
“Better sleep” is not a timing direction.
Success check
The plan shows a clock-time target and direction.
I’m stuck on this step
Reset: Re-read this authored instruction — “Write the required sleep and wake times and whether the current pattern needs to move earlier or later.” — and its success check, then attempt only this step.
Possible snag: Use bright light whenever convenient.
Correction: Write “advance earlier” or “delay later” before placing light.
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
02
Map fourteen days
Record sleep attempt, estimated sleep, final wake, naps, outdoor/bright light, exercise, meals, work and symptoms.
Why this step exists
Timing patterns and social constraints must be visible before intervention.
Success check
At least fourteen dated days use the same fields.
I’m stuck on this step
Reset: Re-read this authored instruction — “Record sleep attempt, estimated sleep, final wake, naps, outdoor/bright light, exercise, meals, work and symptoms.” — and its success check, then attempt only this step.
Possible snag: The result from “Record sleep attempt, estimated sleep, final wake, naps, outdoor/bright light, exercise, meals, work and symptoms.” does not yet meet this declared check: At least fourteen dated days use the same fields.
Correction: Return to the start of “Map fourteen days”, reduce complexity or pace, and repeat only the part needed to satisfy: “At least fourteen dated days use the same fields.”
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
03
Select the phase cue with the provider
The provider chooses the timing, intensity, distance and duration of light or light avoidance, using clinical phase information when needed.
Why this step exists
The same light can advance or delay the circadian clock depending on timing.
Success check
The prescription states when, how bright, how close and how long.
I’m stuck on this step
Reset: Re-read this authored instruction — “The provider chooses the timing, intensity, distance and duration of light or light avoidance, using clinical phase information when needed.” — and its success check, then attempt only this step.
Possible snag: Sit close to an unverified lamp for longer to accelerate change.
Correction: Follow specified intensity, distance, duration and clock window.
Possible snag: Self-select dose and timing from a generic chart.
Correction: Discuss melatonin and medicines with a clinician.
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
04
Anchor the wake period
Rise within the agreed window and use the provider-selected light, activity and meal anchors in the planned order.
Why this step exists
A stable cluster of morning or evening cues strengthens the intended schedule.
Success check
The diary shows whether each anchor occurred in its window.
I’m stuck on this step
Reset: Re-read this authored instruction — “Rise within the agreed window and use the provider-selected light, activity and meal anchors in the planned order.” — and its success check, then attempt only this step.
Possible snag: The result from “Rise within the agreed window and use the provider-selected light, activity and meal anchors in the planned order.” does not yet meet this declared check: The diary shows whether each anchor occurred in its window.
Correction: Return to the start of “Anchor the wake period”, reduce complexity or pace, and repeat only the part needed to satisfy: “The diary shows whether each anchor occurred in its window.”
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
05
Block the opposite cue
Use the agreed dim-light or light-avoidance step at the time that would oppose the intended shift.
Why this step exists
Unplanned bright light can cancel or reverse the desired movement.
Success check
The learner can name which light window is being protected and why.
I’m stuck on this step
Reset: Re-read this authored instruction — “Use the agreed dim-light or light-avoidance step at the time that would oppose the intended shift.” — and its success check, then attempt only this step.
Possible snag: The result from “Use the agreed dim-light or light-avoidance step at the time that would oppose the intended shift.” does not yet meet this declared check: The learner can name which light window is being protected and why.
Correction: Return to the start of “Block the opposite cue”, reduce complexity or pace, and repeat only the part needed to satisfy: “The learner can name which light window is being protected and why.”
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
06
Shift in provider-set increments
Move schedule cues only by the amount and frequency in the written plan; keep naps inside the agreed rule.
Why this step exists
Large jumps can worsen sleep loss and adherence.
Success check
No unscheduled jump or all-nighter is used.
I’m stuck on this step
Reset: Re-read this authored instruction — “Move schedule cues only by the amount and frequency in the written plan; keep naps inside the agreed rule.” — and its success check, then attempt only this step.
Possible snag: Use an all-nighter or abrupt multi-hour jump.
Correction: Use gradual provider-set increments.
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
07
Record response and adverse effects
Each day record sleep timing, sleepiness, mood, headache, eye symptoms and real-world function.
Why this step exists
Clock change is not worthwhile if safety, mood or function worsens.
Success check
The response record includes both timing and burden.
I’m stuck on this step
Reset: Re-read this authored instruction — “Each day record sleep timing, sleepiness, mood, headache, eye symptoms and real-world function.” — and its success check, then attempt only this step.
Possible snag: Call an earlier bedtime proof of circadian alignment.
Correction: Measure target timing plus mood, sleepiness and function.
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
08
Review and verify
After the set interval, the provider compares the diary with the target and decides whether objective phase testing or plan adjustment is needed.
Why this step exists
Sleep time is an imperfect proxy for internal circadian phase.
Success check
The conclusion says aligned, partly shifted, unchanged or unsafe—not “clock reset”.
I’m stuck on this step
Reset: Re-read this authored instruction — “After the set interval, the provider compares the diary with the target and decides whether objective phase testing or plan adjustment is needed.” — and its success check, then attempt only this step.
Possible snag: The result from “After the set interval, the provider compares the diary with the target and decides whether objective phase testing or plan adjustment is needed.” does not yet meet this declared check: The conclusion says aligned, partly shifted, unchanged or unsafe—not “clock reset”.
Correction: Return to the start of “Review and verify”, reduce complexity or pace, and repeat only the part needed to satisfy: “The conclusion says aligned, partly shifted, unchanged or unsafe—not “clock reset”.”
Stop / get help: Stop light exposure and contact the provider for eye pain, visual change, severe headache, agitation, mood elevation or sharply reduced need for sleep.
Correct versus incorrect execution
These accessible process diagrams are built from the tutorial’s own right/wrong teaching. They are not anatomical illustrations and do not add technique beyond the canonical tutorial.
Direction — Timing determines the direction of circadian effect.
Correct / safer
Write “advance earlier” or “delay later” before placing light.
Wrong / riskier
Use bright light whenever convenient.
Dose — Uncontrolled light can cause symptoms and an unintended phase shift.
Correct / safer
Follow specified intensity, distance, duration and clock window.
Wrong / riskier
Sit close to an unverified lamp for longer to accelerate change.
Schedule change — Abrupt sleep loss adds impairment and obscures the phase response.
Correct / safer
Use gradual provider-set increments.
Wrong / riskier
Use an all-nighter or abrupt multi-hour jump.
Medication — Timing, interaction and contraindication matter.
Correct / safer
Discuss melatonin and medicines with a clinician.
Wrong / riskier
Self-select dose and timing from a generic chart.
Outcome — Behavioural timing is not identical to internal phase.
Correct / safer
Measure target timing plus mood, sleepiness and function.
Wrong / riskier
Call an earlier bedtime proof of circadian alignment.
Method-structure checklist
10 of 10 structural checks present
✓ Ordered, Power-specific instructions — present
✓ Every activity has a success check — present
✓ Materials or supplied records are declared — present
✓ Measurement or assessment rule is present — present
✓ Tutorial-specific troubleshooting is present — present
✓ Stopping or escalation boundary is present — present
✓ Every activity has an adjacent alternative — present
✓ Correct-versus-incorrect comparison is present — present
✓ Evidence context is bound to the Power record — present
✓ Planning metadata is present — present
The method-readiness band and presence checklist assess tutorial presentation and are separate from evidence quality for the underlying Power. They are automated editorial aids, not human approval.
Manual editorial sign-off: Pending. This tutorial must not display a human-approved state until an identified editor signs the exact content hash.