It might be the progesterone in the patches. There are other types of Progesterones out there, so if you feel that you want to stay on HRT if it’s helping, ask if you can try a different regime.
I was on Evorel Conti, but due to excessive bleeding on it, but have now switched to Evorel 50, with Utrogestan for the progesterone. Not perfect, as still getting some bleeds, but definitely better.
Good luck. HRT is not a ‘one size fits all’ and usually needs some tweaking along the journey.