I've found that different doctors say different things, because there's wildly varying levels of knowledge (and ignorance) about this disease within the medical community, with the majority of doctors (and specialists) relying on whatever they're told by drug company reps - so it pays to gain as much knowledge for yourself as you can, so you can make your own informed choices.
In my instance, the longer I was on the meds, the worse the condition became and the biggest mistake I ever made was allowing a specialist to psychologically bully me into having RAI, which severely exacerbated the condition, not alleviated it.
Since then, I took matters into my own hands because I had a kind of epiphany that nobody is ever going to care about my health, but me.
That meant ceasing all meds, firing all doctors and specialists, totally overhauling my diet, drinking a lot of water every day, researching and investigating various herbs that might help, which I can use as teas, learning about natural foods, avoiding all the usual suspect stimulants, and keeping my life as stress-free as humanly possible....because I just can't afford a long list of supplements, so I'm relying solely on diet and nutrition.
It was Hippocrates, after all, who admonished, "Leave your drugs in the chemist's post if you can heal the patient with food".
My question (that no doctor or specialist has ever attempted to help me answer) has always been, "Why sent my body into this state of dis-ease? What's the root cause?" I believe that once I discover the answer, I'll also discover my own cure.
In the meantime, I've lived through several thryoid storms in the 9 years I've had this disease and it's always boiled down to stress having been the main trigger (for me, anyway). Once I remove the stress, the symptoms settle down.
I spoke with a clinical hypnotherapist a few years ago, who's husband, at that time, had had the disease for 15 years. She told me that she uses hypnotherapy weekly with him to help keep it under control. That might be something else to consider?