A few things:
- Prepare for sleep sooner, with dim light and a quiet place, and no screens.
- drink a bunch of water
- don’t set an alarm, but tell yourself when you want to wake up.
It might not work the first time, but after a few attempts it will. Oh, and no food or stimulants within 3 hours of your bedtime.
It makes me think back to episodes of Lost and think “that’s so much more plausible than current reality.”