I’m going to recommend considering that maybe you should consider splitting your sleep hours. It’s very common as people age to have more trouble staying asleep all night long. What if you try going to sleep at midnight, wake maybe at 6:00am, and then nap an hour and a half midday. Or, whatever pattern is more natural for you. Once in a while maybe you don’t get your nap, but so what. If the pattern helps you be awake when you want to be awake, then I think it’s ok.
Things to remember about falling asleep:
Studies show your extremities need to be warm to fall asleep. If your feet or hands are cold it makes it difficult to fall asleep.
A dark room helps people fall asleep. You can wear an eye mask or get blackout curtains if your room isn’t dark now.
Don’t try to go to sleep when your not sleepy yet. Tossing and turning waiting for sleep is agitating.
Don’t drink caffeine right before bed.
Don’t drink right before bed. Make sure you’re hydrated well, and don’t feel thirsty, a good hour before you lie down to go to sleep.
Do something mindless the hour before bedtime. Watch a TV show that’s easy to follow, or read a book that is calming. Interacting with online tends to keep people awake. Also, many online games and social media sites are set up to touch our addiction centers, which keeps us engaged.