(((Indy))) it can be frustrating for sure. As someone who had a very advanced case of Graves in her 20's I do remember how frustrating and challenging it was to get under control (in my case we could not which is why my thyroid was removed when I was 25).

Fortunately they are catching it while it is still mild, and that is awesome. No less frustrating because it can be challenging to get the levels where they need to be and keep them there. I no longer remember what all of the numbers mean, I wanted to say that I am sorry you have having to go through all of this. It isn't fun, for sure.

I second the suggestion that it might be worthwhile to get another opinion. Yes it is going back to square one, but the ultrasound and other scans have already been done so at least that won't need to be repeated. Sending good thoughts and wishes your way.