I have been a night shifter for more than 1/2 of my nursing career (4+ years so far). #1-When you go to bed, unplug/turn off your phones! I don't care what happens, it will be handled without me. You will need to do this because people just don't understand that noon translates to 2am for you. They will NEVER get that either. #2-When possible, stay on "night shift" even when off. Switching back and forth shaves years off your life. Though I know this, I do switch every week due to having a young child. #3-darken your bedroom with UV blocking curtains. (They work just fine for me.) If it's not dark enough for you, get black poster board and cover your windows. Keep your room temp on the cool side. You will sleep better.
I sometimes go through sleep issue phases. During them I take melatonin. If that doesn't work, I take 1/2 a phenergan. I normally get 7 hours. I feel best with 7 straight but don't often get it.
I go to bed between 830a and 9a and I set my alarm for 4p but rarely sleep that long.
I hope this helps. I'm sure you'll be fine. I love night shift and I have no plans of switching to days.