Thanks @arpie. The thing is, I've got to be on an AI for 10 years. My understanding is that the side effects can settle down as the body adjusts, and that this can occur round the six month mark. So I want to try to tough it out rather than chopping and changing. With 10 years I've got the time to do it so I'm going to try.
I don't have an oncologist at the moment. Mine has quit private practice to do more research. I have an appointment with my breast surgeon next week to discuss who he thinks I should see. And I only see the oncologist once every six months now anyway. Though I will book an appointment with the new one to introduce myself and go over everything. We'll see.