I totally can relate ! I also work night shift because of the timezone of our clients.

I just have a different routine I guess. I treat nighttime as daytime. As soon as I wake up, I drink cofee as if it is breakfast lol. I don't drink coffee anymore after 11pm. Then I'll have my lunch at 12:00 AM and dinner at 7:00 AM. I have blackout curtains and pretend it is late at 11:30 AM lol. And during my day off, I still wake up at night to maintain my body clock. This is the time I do my chores, laundry and stuff. Weird I know!