for me, years ago my sleep was kind of different due to severe insomnia and related trauma symptoms, not really to the actual dissociation itself. i would go to sleep at 3 or 4 a.m. and get up at 7 a.m. for college. i wasn't able to sleep during the day for obvious reasons. but it took years for my sleep to get better on its own...and during those years, it was very up and down, but due to severe insomnia regardless. it also depended on what i had to do during the day, appointments, etc., so i wasn't always able to catch up on sleep. having a schedule and things overall improving for me helped my sleep, so i am on an almost regular sleep schedule these last few years finally.