I am sorry to hear that you are suffering from the dreaded insomnia.
I have suffered from it for the 5 years I was on an AI. Anastazole was the worst (5 days out of 7) and letrozole the least worst (3 days out of 7). My problem was that if something jarred me awake as I was dropping off (hubby twitching, hubby nipping to the loo, foxes carousing etc) then that was it, wide awake, till 3 or 4 in the morning.
It didn’t matter what time I took the pill - just the same.
I am so pleased (and sorry you will have to wait for this) is that as soon as I stopped the pills a few weeks ago I realise I can sleep again.
As for vaginal dryness - I was prescribed vagirux by my GP . It has warnings about giving it to BC patients as contains low dose oestrogen but I was assured by GP, BCN that it would be fine as topical pessary. My oncologist said that ‘the jury is still out’ but would would allow me to use it if non-hormonal stuff did not work. I do have some still, but am now on hyalofemme too (not prescription) . Funnily enough that did sting like crazy while I was still on the pills, but now I have stopped it no longer does.
Oh yes - and I have a hairy chin - feel like an old witch!