You appear to be adequately medicated, TSH is low and FT4 is low but that's typical when taking T3 in addition to Levothyroxine. FT3 4.97 would be fine for me (I've also had a thyroidectomy) but others would need it higher in range.
Thyroglobulin antibodies are positive for autoimmune thyroiditis (Hashimoto's). There is no cure for Hashimoto's which causes 90% of hypothyroidism. Treatment is for the low thyroid levels it causes. Many people have found that 100% gluten-free diet is helpful in reducing Hashi flares, symptoms and eventually antibodies.
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