Hi @Rdc2022, have you spoken to your oncologist? That all sounds terrible. Sorry you are suffering so much. It's hard.
I am on Letrozole but only changed to it recently after being on tamoxifen for 20 months. I was ok on tamoxifen initially but the last couple months I felt like a 80 yr old. My moods were up and down, my legs felt like concrete and I was so breathless. My oncologist stopped it immediately and gave me a little break and then a change of AI. So far ok but my oncologist also said if I suffered too much with side effects then I could try another.
Maybe you could talk to your oncologist about either strategies to manage how long to keep going like this before trying something else. I really hope it settles down for you. Best wishes to you.