Looks like we're in the same boat. My sleep habits are also changing and I noticed I could hardly ever fall asleep before midnight. It is bad because the hours you sleep before midnight are the best and that's when your body and mind is resting. Plus I'm a light sleeper, so even if I sleep for 6, 7 hours, I'm still not rested.
What I find useful is to log off any device around 10pm and only watch TV or read. Reading makes me fall asleep faster. Otherwise I have no chance. For me, trading the NY pm session causes a lot of trouble as I finish at 11pm and need an hour till my mind slows down, so most likely I'll have to skip this session, if I want to improve my sleep quality.
I don't know at what hour you go to bed, but I suppose not before midnight, which is not good.