I am loath to recommend meds, but have you tried Melatonin?
It's one of the things that my Familiar, strangely, forbids. But, I used to take it before. It did help with falling asleep,
but won't help with the early wake-up that plagues me now, so I don't mind her rule. Some days I'm up at 4, and that sux.
Low dose, for starters, 1 milligram if you can find it. Seems hard to find that dose level, 10 is in the stores, which is crazy high dose.