Development is largely based upon genetics. To my knowledge there is nothing that you can do other than a facial hair transplant or minoxidil ( not proven effective) to " vastly and immediately " increase your facial hair situation. You should post pictures so we can see what your options might be . Other than that you just have to wait, and try growing something out. PS: Technically it doesn't matter how much Biotin you take, you can't really overdose on it as it is a water soluble B vitamin.( you will just excrete extra)