Randall3329, the times I go to bed are based on my phobia too. All the times I remember getting sick were at night, so I used to only be able to sleep at sunrise. Currently i can only go to bed after midnight, and assuming I haven't eaten for four hours and that I'm not anxious or neuseas.
Though sometimes I can trick myself in to going to bed earlier, (I go to bed with the intend to listen to music or read)... or when I am extremely bored I can go to bed earlier. I generally go to bed between 1am and 2 am. Luckily I don't have to get up early, so it doesn't cause me too much problem.