some of the tips i've heard are putting pillows on each side of yourself to keep your body from rolling over, and putting a pillow underneath either your lower back or legs for added comfort. also melatonin supplements- if you're gonna take them, then take them at the same time everyday and the same amount (after you find an amount that suits you ofc) so you're body feels like it's still on a schedule. in terms of less healthy options, there's weed and alcohol, i dont really recommend using those for sleep though