Currently having success with...
5 mg Natrol melatonin... taken about one hour before bed.
Right before bed... one half a Benadryl tablet.
Once in bed, I read a few pages of a novel by subdued lighting.
I don't let myself get anxious if I don't fall asleep in the first 15-30 mins. after turning off the light.
If needed, I add a mental trick; instead of letting my mind wander through the many things I could think about, I think of a grey wall.
It may also help you to get some blue light blocking glasses:
https://www.amazon.com/Blue-Blocking-Amber-Glasses-Sleep/dp/B01GSFTX08/ref=sr_1_13
EDITED to add: I usually sleep 3 - 5 hours at a stretch before needing to get up to pee. I go right back to sleep since I've been using the Natrol melatonin.