Hi Sharon, sorry you're not feeling well.
I think it's really good to have a base of good quality supplements. A good multi, vit c additionally, omega 3.
I don't know about menopace, but if it did nothing for you before, then I'd say not to bother with it again.
By taking a good base of supplements, it won't interfere with your hrt, I would say, but maybe someone else will be along with a different view.
Sorry you're not sleeping. That's really horrible. Is that because of night sweats or anxiety? If night sweats, then do make sure your bedroom is cool. Keep curtains shut in this hot weather and windows shut during the day. Also have a sheet to cover you aswell as your top cover so you can just have the sheet if necessary.
If it's anxiety stopping you from sleeping, that's tricky. I would maybe try magnesium citrate supplements taken before bed. Also in the multi make sure it is vit c from magnesium/calcium ascorbate and not acid.
Good luck. X