I have lots of difficulty sleeping so I like to do a lil bit of self care during my various restless nights.
Make some warm milk or soothing tea. (I prefer to heat up milk on the stove and add in lavender, honey, and vanilla)
Listen to ambient noise. (Rain, piano, lofi, or whatever else you find relaxing)
Find bedding that is the comfiest to you. (Silk bed sheets/pillow case and a huge puffy blanket is my preference)
Light a calming candle if you have one available. Incense works too. (My favorite scents are of the floral variety, rose in particular)
Manage whatever you’re stressing over, otherwise it will definitely keep you up. (My schoolwork stresses me out so I make a to-do list to feel like I have my shit together)
Read something in bed! While I generally prefer to watch tv instead of read, it can actually cause you to stay awake. (I’m currently reading “The Bell Jar” but anything works, including comics and manga)
Find little things that relieve pain or make your sleeping experience more pleasant! (I have an electric heating pad I sleep on top of)
That’s all for now! I have more ideas but these are the ones that came to mind first. Hope this helps fix ya fucked up sleep schedule!