Six Years Ago I Had A Thyroidectomy. I Am Now

Six years ago i had a thyroidectomy. I am now on naturethroid, dosage 113.75. My latest lab test was tsh-0.09 low, t3 was 3.0, t4 was 058 low. I am 62 years old, height is 5.3 and weight is 156. I would like your opinion. I am also, on Zoloft for depression 50 mcg per day. My doctor says she might need to lower my thyroid med's but was willing to wait until my next lab work which will be in March. I was on 130 of naturethroid and dosage was lower in December. I am feeling ok, but I have noticed I have to eat less carlories per day than I did before the dosage was lowered,otherwise i am gaining weight.