Hello @kt261 , Bravo for trying. Taking a break when things get too hard is understandable, I am glad to hear you are working with your doctors and trying to reduce your chances of more cancer. It has a nasty set of side effects too.
I also had low mood issues and the occasional episode of spatial memory problems. It does get better, and it got better well before I was finished with endocrine therapy.
Once my brain and body adjusted to having no estrogen, the side effects of the drastically changing hormones just weren’t a thing. The long term side effects of very early loss of estrogen will continue of course. Just like someone who lives a long time after menopause. The only really stubborn side effect of 15 years of endocrine therapy is the hot flashes, and in the summer months they are still pretty brutal.
Has your doctor discussed lowering doses, or on/off schedule in order to lessen these effects?