Why is it so difficult to imagine that people have different sleep schedules? Like, we do not blink at the thought that, say, height exists on a bell curve. Why wouldn't a circadian rhythm?
God save me from the early-riser moralists.
Of tremendous importance to me was learning that not all sleep is of the same “quality”, and that quality affects you the next day. You can learn how to improve sleep quality. Matt Walker is a good start in case your interested. Andrew Huberman has some episodes on it, too, as does Rhonda Patrick.
If you’re happy with 1AM then by all means, don’t change. I wasn’t happy with how I felt during waking hours. I was getting enough sleep, but it was low quality.
That being said, when I used to be on aderall for my ADHD I would often take my second dose of the day right before going to bed, as it would help me calm my brain down and fall asleep.
Caffeine does not affect me or my sleep cycles, it does help me focus though by quieting my mind down, and on the weekends I enjoy drinking a cup of coffee and going back to sleep for 30 - 90 minutes of deep relaxing sleep.