finasteride stopped shed at top/front but still losing from back

[we3mcd]

Hello, I suffer probably from retrograde alopecia, i lose hair from top, in norwooding patter, + i lose from sides and back. I started taking finasteredi probably around 2 weeks. around 5 day i completely stopped shedding hair from top/front. But when I pull hair from back I still lose hair. Anybody with similiar experience? i have long hair but I don't have much hair at back and sides.