Hi, when I first started on the finasteride, my shedding stopped almost completely after maybe week 3.
At about month 3 I started to noticeably shed at a high rate. It would come in bursts. Shed a lot at night, then slowly, if at all, for a day or two, then another burst.
I'm at month 4 now, maybe just a little under, and that pattern is continuing. My hair now looks about the same as when I first started the treatments - a full head, and thining on the top and back.
I'm gritting my teeth waiting for this phase to stop, but from everything I've read, it will be worth it.