Well, your doctor should have treated your thyroid first before putting you on androgel. Being hypothyroid is a direct cause of hypogonadism. Cure one you can often cure the other.
Androgel is effective. My thought would be when a full thyroid panel (not just TSH) reveals things to be in order you could come off the agel (via a proper PCT) and restart your natural production and see where you land. If your T level does not return to a good level then welcome to our world.
Welcome to the forum aquaslow.