In my opinion the very best way to treat a thyroid
patient is to test and adjust the levels
of FT3 and FT4 with whatever type of medication is required to relieve symptoms, without being constrained by resultant TSH levels. Symptom relief should be all important. Your doctor clearly doesn't understand or agree with this. You are going to have to discuss all this and push him to prescribe meds enough to relieve symptoms, or else you need to find a good thyroid doctor that will do so.