Dear Andy Please reply me

HBF is 35.7 % and HBA was at 17.3 % HB S 42.9 and HB A2 4.1 % and no any blood transfusion ever.
Dear Andy My question is that after one year  use hydra HBF is 35.7% and before use hydra HBF was 37.3%.
Plz suggest me can I stopped hydra or doses minimize?