I worked night shift for 25 years as a nurse, so I'll give you my routine. On the evening of the first night shift, I put myself to bed around 7pm. I turn the lights off and put the fan on. I don't always sleep, but if I just lay there and rest(no reading or watching TV) I'll get some energy. At 10pm or so, I get up, shower & dress for work. It helps me if I turn all the lights on and play upbeat music to get my blood going. Staying awake at night was never a problem for me--I'm a night owl anyway.
There's a lot of discussion about when to go to bed the next morning. Some people swear by staying up and getting some other things done. Not me. I'm so whipped after work, especially after that first night, I fall into bed as soon as I get home. Turn on the fan, get it real cool in there, block out all the light, turn off the phone. I even put a sign on the door that said, "Baby sleeping. If you wake her up, there will be hell to pay!"

If you wake up during the day, make yourself lay there with your eyes closed--you'll go back to sleep. I learned to walk to the bathroom and do my business with my eyes shut.

I sleep until 4-5pm, then get up and fix supper. I don't go back to bed until the next morning.
Meals are kinda weird. For instance, I eat cereal when I come home from work, even though it's technically my supper. I eat lunch around 1-2am. When I wake up, I'm going to eat supper even though it's really my breakfast. That can lead to some interesting choices--fried shrimp for breakfast? How about Lasagna? You get used to it after awhile.
On my off days I sorta keep to that schedule. I sleep late and stay up late. The first night back to work is always the most difficult but you'll get into the rhythm. The best piece of advice I can give you is to make sure you get long, uninterupted sleep. Don't try to do things during the day. If you have dr appointments or school meetings, make them first thing in the morning or last thing in the afternoon. No middle of the day meetings, unless it's life or death. You really have to guard your sleep. Be sure you're family is on board. It's hard for other people to "get" the life of a night shift worker--that's why you turn your phone off, cuz you won't believe how many people will call you and say, "Oh, are you sleeping?" My kids & DH learned the hard way not to wake me during the day unless my hair better is on fire!
Good luck with your new shift. It will take you some time to get used to it. Prepare to be exhausted for the first 2 weeks. You'll probably want to sleep all day long--make arrangements for that. But you'll hit your stride sooner or later.