i'm not sure how things work with teenagers, maybe they don't want you to be on meds for the rest of your life if you don't need them.
for me meds are necessary - I can't handle the depressions without them.
my best advice is to tell the truth to your pdoc and T and tell them everything that they need to know. That way you get the best possible help and they can make the best decisions with regards to your treatment.
Therapy helps but is not enough on its own when the moodswings hit...