Have you tried sleep headphones and/or noise generation? Also does listening to guided meditation/relaxation recordings (as opposed to just following a practice you read) do anything to knock you out?
Right now falling asleep is usually not a problem. Waking up early and then again and again is the problem; plus not sleeping more than 5.5 hours. This is an example from my sleep diary: bedtime 11:39, and the subsequent wake up times are 1:50, 3:16, 4:42, 6:01, 6:35. I wrote a simple app to track them without having to look at a clock. I only know the result when I'm out of bed.