You are taking a megadose of thyroid meds (240 mg of compounded dessicated
and 100 mcg of levo per day?),
and your FT4 is very
low,
and your FT3 is on the floor, but your TSH is almost non-existent.
Since you are not new to hypo, have you always been on such high doses? Have your FT3/4 ever been higher? Have you ever had a diagnosis of the cause of your hypo, since TPOab is negative, and it's unlikely Hashi's. How long have you had these symptoms?