One thing you might try is writing your symptoms down in a special place, and all your questions. I started this during my GD treatments, and now do it for all my daughters’ pediatric visits as well.
You aren’t loosing it — GD takes a big toll on your body. It also takes time for you to stabilize, whether you have surgery, RAI or are taking ATDs.
Call your endo and take in your list. Perhaps there’s some treatment s/he could offer that may give you some relief. It took me a while on my ATD before all the effects were shown, but I did level off! 
Good luck and good health
Julie