I have recently learned that this is called Delayed sleep phase syndrome (DSPS) and is very common in many people ‘on the spectrum’. I think it’s nonsense to call it a syndrome but that’s modern society for you.
Anyway, I usually don’t sleep before 4am, often even later. It’s rough 😬
I kinda… don’t lol. But I work just 4 days a week and on 3 of those I start relatively late (10:30), so that helps a bit.