Hi Donna69,
Insomnia is brutal and I absolutely sympathise.
If are not keen on re visiting HRT, would you consider something like amitriptyline? I take a low dose, primarily for nerve pain, but soon discovered it assists with sleep also.
It can give a dry mouth initially, but for me, a small price to pay for a few hours sleep. If you take it early enough in the evening, you shouldn’t feel groggy the next day.
Other wise, it’s down to experimenting with different “ sleep products” which may or may not work.
Bananas I find are sleep inducing. Also peanut butter! A milky drink? Pukka valerian tea? Clary sage essential oil a bath or diffuser? Listening to a really boring podcast?
As joziel said, the mirena is excellent at keeping the womb lining thin and then you could use oestrogen alone ( there are many to choose from). You may then find once you are at a suitable dose, you start to sleep for longer.
Hope you can find a solution soon.