need some advice should i start to take fin

im nw2.5 rn 16m (no its not maturing or smth else, unfortunately im very sure that im balding)

i will be 17 in 3 months and i dont think start taking fin until im 17, im on min and keto for like 1 month but i still feel like its going further

my question is should i wait until im 17 to start taking fin or should i start now