I've been there myself. After 1y of 1mg daily propecia I was below baseline with what I perceived to be increased rate of loss, noticeable temple recession, and bald spot at the vertex. I decided to continue for 1 more year to give it the full 2yrs. My 2 year mark was about 3 weeks ago. My bald spots bigger, my recession is worse, and now I'm thinning throughout the hair line. I decided to stop finasteride and am weighing starting dutasteride now.
To anyone using finasteride I would suggest dropping it at month 6 if shedding has not stopped or slowed and waiting for the 1 y mark to notice any regrowth. If shedding hasn't stopped or slowed at month 6, i would not suggest continuing.