Huh, I had a similar experience during my adolescent years, yet right after high school I have had zero troubles with the sleep.
Starting from the age of 13 and till 18 I would go to bed at 1-2 AM, occasionally at 3-4 only to wake up at 7-8 AM almost every day. Double espresso every morning, 10-15 minute naps in the classroom/subway/literally anywhere/nights without sleep at all - I had it all. The only exception were Sundays, where I would get solid 11+ hours sleep.
I think during these times I learned the value of high-quality sleep and I am simply afraid to miss on it now.
Also no alarm clocks, coffee/energetics only when it's really necessary (once a few months at most), regular exercise (does not matter what exactly, as long as I move any parts of my body, even plain walking around is amazing) - all of it goes a long way to help with the sleep.
Starting from the age of 13 and till 18 I would go to bed at 1-2 AM, occasionally at 3-4 only to wake up at 7-8 AM almost every day. Double espresso every morning, 10-15 minute naps in the classroom/subway/literally anywhere/nights without sleep at all - I had it all. The only exception were Sundays, where I would get solid 11+ hours sleep.
I think during these times I learned the value of high-quality sleep and I am simply afraid to miss on it now.
Also no alarm clocks, coffee/energetics only when it's really necessary (once a few months at most), regular exercise (does not matter what exactly, as long as I move any parts of my body, even plain walking around is amazing) - all of it goes a long way to help with the sleep.