This sounds similar to a technique that I heard about some time ago for overcoming jet lag: Decide what time you want to wake up, locally, in the new time zone

This sounds similar to a technique that I heard about some time ago for overcoming jet lag: Decide what time you want to wake up, locally, in the new time zone. 16 hours before that time, stop eating and sleeping. If possible, try to arrange to fall asleep by 8-6 hours before that time, for a normal night's rest. When you wake up the next day, you will be famished. Eat a large, filling breakfast. Supposedly the hunger/full cycle has an impact on the body's circadian rhythms, and fasting followed by eating is an especially good way to reset the clock to think "morning" is when you woke up and ate. I read some evolutionary-biology hypothesis that starvation was a larger threat to ancient mankind than sleep deprivation, such that when an individual becomes extremely hungry, the body clock pauses to favor alertness, and then can be switched back on with a large meal. However it works, it's worked well for me when I needed to travel long distances (compared to previous trips where I did not). I totally believe that a similar technique could work on a daily basis to help 'anchor' your sleep to the desired time. https://hbr.org/2009/05/a-fast-solution-to-jet-lag/ https://hbr.org/2009/05/a-fast-solution-to-jet-lag/