UPDATE - OMG, I just had the best sleep I've had IN THE LAST THREE YEARS, since all this peri crap started

Two consecutive nights of it. I'm finally on the right path.
It's happened because I've finally got my estrogen up. (I know that, because I increased my patch dose to 75mcg and started to spot a day or two later - and then the amazing sleep started.)
So I'm now on 75mcg patch, 6 pumps of gel and 2 sachets of Sandrena a day. I'm not really supposed to be on the Sandrena but I have about 4 boxes of it, which is going to last forever and I can't bring myself to throw out precious estrogen. So I'm using a sachet AM and PM and hoping it helps the gel go further.
But really the plan is to get onto patches as much as I can and top up if necessary with gel. I am increasing patches again this Friday to 100mcg and decreasing gel. It remains to be seen where this goes but it's looking good.... Meanwhile I have an appointment with my NHS GP tomorrow, with the hope that she approves what Newson recommended.
Oh and currently I'm on 25mcg T4 and 25mcg T3, so I'm about halfway through weaning off thyroid meds without symptoms (yet).