My most recent attempts to get a good night's sleep:
1. No caffeine after lunch.
2. A melatonin tablet at 10:00 pm
4. Start getting ready for bed at 10:20
5. Put lavender on my feet (to combat diabetic neuropathy burning)
6. Listen to sleep tape.
So far this is allowing me to get to sleep. This is pretty involved, but after four nights of not getting to sleep until 3:30 am, I was ready to try other steps.
So far, so good.