purplehead Sorry, I don't have any advice. I've had insomnia since I was a teenager and it's never gone away. I don't think there's anything I haven't tried, including being referred to a consultant at a sleep clinic. My problem is falling asleep in the first place.
All I can say is that since I've retired (sort of), I live my life round insomnia and work through the night, if I feel alert and sleep late, if I don't have anything arranged.
I get enough sleep most of the time - just not at the same time as most other people. When I first got together with my partner, it caused problems to begin with, but now he understands how I am and I try very hard to adjust my sleep pattern to a more normal regime, but I don't get stressed out if I don't manage it.
My blood pressure and diabetes are now so much better than when I was getting stressed about sleeping to fit round a job and family responsibilities. In the summer (when it's light) I even go out for a brisk walk or cycle ride very early in the morning, so I'm fitter.