I was diagnosed in 2013. My TSH hasn’t made a return yet, but I’m not quite in remission yet, either. I thought maybe I was heading for remission when I was off methimazole for about 9 months, and I was just waiting patiently for my TSH to come up, but sadly, everything but TSH came up. However, we caught it early, added just a little bit of methimazole back, and the hormones were back to mid-range within a few weeks. But TSH is still low. (Not sure if that’s helpful for you, since I obviously haven’t achieved remission yet.)