I use a trick I learnt from a rotating shift worker. He didn't use the word 'hack' but that's what it is. If you find it hard to fall asleep in order to wake u

I use a trick I learnt from a rotating shift worker. He didn't use the word 'hack' but that's what it is. If you find it hard to fall asleep in order to wake up at the desired time, then just skip a sleep cycle. That is, stay awake until you are no more than 10 to 9 hours from when you have to wake up next. The extra hour or two compensates for the missed sleep. Make sure the bedroom is dark, cool and quiet. I need an alarm to wake me up, when it goes off, get up. Same trick also works for me when adjusting for jet lag. Trying to sleep when you don't feel like it is hard. Staying awake an extra couple of hours when you getting groggy is a bit easier. But don't drink coffee, etc.