One is to get a new doctor because she's citing a study done on hyperthyroid patients (as opposed to patients receiving thyroid replacement due to hypothyroid)--if you feel good at your dosage and have no hyper symptoms (diarrhea, excessive weight loss, anxiety, heart palpitations). Your weight loss may indicate over replacement, but not necessarily.

Two--have you considered reducing the Armour and supplementing with synthetic T4? You could get the benefits of bringing your FT4 levels to a more normal level as well as perhaps getting you out of bed in the morning (personally I have found taking my medication including my small dose of Armour at 5:30-6 am gets me out of bed by 7 am most days).

It is quite normal for TSH to be below normal or even suppressed with T3 supplementation.

Check this out, print out the associated research articles and show them to your doctor. Maybe she'll change her mind.

I wish I was doing as well with my symptom resolutions as you are.