TSH >2.0 indicates your thyroid is beginning to struggle but FT4 is good and FT3 is very good. It's doubtful you would feel any benefit taking Levothyroxine or T3 replacement.
There are nutrient deficiencies that can cause symptoms similar to hypothyroidism. And if your thyroid is starting to struggle then developing low nutrients might be where the symptoms start.
If you could get vitamin B12, folate, ferritin/iron, and vitamin D tested it might show something up that you can fix yourself.
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