@kezmusc and @kmakm no problems with venting - go for it - just trying to help you both hang in there and get thru it to a more comfortable spot.
Understand where you are coming from @kezmusc as describes me on statins 3 years ago which I stopped opting for diet , low dose aspirin. I was very scared as I thought I had dementia but lifted rapidly when I stopped them.
Maybe a change of HT might work if brain fog , memory etc are the key issues as none of those issues have I had on Letrozole.But I am only one person - might be worth opening up a conversation on the blog to see if anyone has had those issues on an Aromatase Inhibitor .