CBT-I Sleep-Restriction Ladder
Compress time in bed, rebuild sleep drive, then expand slowly.
- Difficulty
- Advanced
- Time to result
- ~weeks to results
- Steps
- 6
- Confidence
- 99%
Stephanie Romiszewski describes cognitive behavioural therapy for insomnia as retraining sleep rather than forcing it. The process begins by correcting beliefs that trigger compensatory behaviour, then temporarily limits time in bed to roughly the amount a person is actually sleeping. In her example, someone sleeping about six hours within ten hours in bed might initially receive a five- or six-hour window; she says her practice does not generally go below five hours. The schedule is held for about a week. When sleep fills roughly 90% of that window on average, time is added back gradually while preserving the quality already built. Mindset, daytime stress, and anxiety are addressed too, but not as immediate techniques that guarantee sleep. Because this is a clinical insomnia intervention, individual suitability and safety require care.
Origin
Romiszewski explains the sleep-restriction component of cognitive behavioural therapy for insomnia and how she uses it with clients in The Diary of a CEO.
Core principles
- 01More time in bed can dilute sleep drive when wakefulness fills that time.
- 02Sleep quality and continuity matter more than chasing a fixed duration.
- 03Education changes the beliefs that drive counterproductive compensation.
- 04Time in bed should expand only after sleep becomes consistently efficient.
- 05Daytime stress work supports retraining but is not an instant sleep switch.
How to run it
- 1
Re-educate the sleeper
Identify beliefs about perfect duration, sleep debt, and the consequences of a bad night that are driving anxiety or compensation. Replace rigid rules with a more realistic understanding of sleep variability.
Pro tip Use the person's own language to uncover which belief is changing their behaviour.
Watch out Information must be tailored; simply declaring a belief wrong may not change it.
- 2
Estimate actual sleep
Compare time spent in bed with the approximate time actually asleep. Use a broad estimate rather than treating consumer tracking as exact measurement.
Pro tip Look for the recurring pattern across several nights instead of judging one night.
Watch out Do not let measurement itself become another source of sleep anxiety.
- 3
Compress the sleep window
Temporarily restrict time in bed toward the estimated sleep duration so sleep drive can strengthen. Romiszewski says her clinical approach generally does not reduce the window below five hours.
Pro tip Frame the intervention as restricting bedtime opportunity, not forcing sleep deprivation.
Watch out This is a clinical technique, not a universal prescription; consider medical conditions, medications, driving, caregiving, and safety-sensitive work.
- 4
Hold the schedule
Keep the selected window consistent for roughly a week so the body receives a stable pattern. Focus on whether sleep becomes more continuous rather than rushing to add time.
Pro tip Treat a week of consolidated sleep as progress in its own right.
Watch out Do not extend the window early merely because a longer duration feels like the goal.
- 5
Expand after consolidation
Once sleep occupies about 90% of the window on average, add time gradually. Stop expanding when the body no longer maintains that level of efficiency.
Pro tip Use an average rather than demanding perfection every night.
Watch out The transcript presents 90% as Romiszewski's working threshold, not a personalised medical rule for everyone.
- 6
Rebalance the day
After sleep drive begins improving, examine stress, workload, processing, and daytime balance. Treat these as supporting conditions rather than relaxation tricks that must produce sleep on command.
Pro tip Set expectations before adding relaxation or anxiety-reduction practices.
Watch out A failed attempt to relax can deepen hopelessness if it was presented as a guaranteed cure.
In the wild
Romiszewski describes a person who spends around ten hours in bed but sleeps for about six. She would initially narrow the window to approximately the amount slept, hold it for about a week, and only begin adding time when sleep occupies around 90% of the window.
→ The person first builds more consistent, consolidated sleep and then expands duration incrementally.
A person with persistent insomnia discusses CBT-I suitability with a qualified clinician, estimates their recurring sleep rather than trusting one tracker score, follows the agreed window for a week, and reviews both efficiency and daytime safety before any increase.
→ The intervention is adjusted from observed response instead of an arbitrary eight-hour target.
Common mistakes
Extending time in bed after every bad night
Going to bed early or lying in may increase wakeful time in bed and weaken the regular pattern the intervention is trying to build.
Chasing the threshold obsessively
Romiszewski warns that people can become preoccupied with reaching 90% merely so they can add more time, overlooking improved sleep quality.
Using a clinical floor as a universal target
Her five-hour lower boundary is described within her practice and should not be generalised without considering individual health and safety.
Is it for you?
Best for
People with an established sleep problem who spend substantially longer in bed than they sleep and can follow an appropriate CBT-I plan.
Not ideal for
People who need personalised medical assessment, have another untreated sleep disorder, or could be endangered by increased sleepiness.
From the transcript
“It's called sleep restriction therapy.”
“once we can get them to sleep for around 90%”
“we slowly incrementally start adding sleep out”
From the episode
The Secret To A Good Nights Sleep with Stephanie Romiszewski