Minoxidil alone?

I am currently back on 0.25mg oral fin and 1mg min for the first time in a few years and am having some pretty painful side effects from the finasteride. I was wondering, if I just go on oral minoxidil plus biotin, if I would be able to keep the hair that I have.

if your hair loss is aggressive eg. began before 25, then prob. no. fin is literally what keeps the hair.