boyfriend not getting good sleep because time difference

he's 10 hours ahead of me and I always have nightmares when I sleep alone. I feel so bad because he complains about being grumpy and uptight...and having migraines. I say hey I can mess up my schedule for you ...and he's like why? you never cared before. yes I do. he says he just has to put up with it until I see him. which is 2 months away but still I feel like shit. :(