When Does Hair Begin Growing After Eating Follihair?

i HAD MASSIVE HAIR FALL FOR THREE MONTHS. CONSULTED A DERMATOLOGIST AND HE GAVE ME FOLLIHAIR ONCE A DAY AND HAIR FOR U TO BE APPLIED ON THE SCALP. THE HAIR FALL HAS NOW STOPPED AND NOW I JUST EAT FOLLIHAIR ONCE A DAY. IT IS NOW THREE MONTHS THAT I HAVE BEEN USING THE PRODUCT. WHEN CAN I ACTUALLY SEE THE HAIR GROWTH COMING BACK BECAUSE I HAVE VERY SCANTY HAIR LEFT. THANKS