Try splitting sleep into two blocks. I sleep for a few hours before and after my shift. Not ideal, but helped me adjust.

Ugh, night shift. The eternal struggle. I've always found exercise, a hefty dose of caffeine, and sheer willpower are my best allies.

Are you eating q4h? Helps keep your circadian rhythm on track, even if it's middle of the night. Not a cure all, but it helps.