What I want to know is at what point would treatment be needed?
You need to perform the thyroid antibodies tests, there are three of them, antiTPOab and TGab for hashimoto's disease which can cause both hypo and hyper and the TSIab for grave's disease which causes only hyper, your TSH is quite low, what doctor recommended that you wait and retest? is he/she an Endocrinologist ? usually people with hyper see that there TSH is undetectable at for example 0.001 .
Best of luck,
P.S. Next time you post please try to use more polite words, I am not sure, but maybe if the forum moderator read your post, she would delete it or give you some comments.