i'am a hairstylist and i feel for what your going through. I think you should be taking Folic Acid 800 mg on a daily basis.I've seen some pretty dramatic results with this in just a few weeks. The biotin is not going to make your hair grow thicker just faster. Their is also this great powder they sell at Sally's thats really great for filling in patches of sparse hair. The one we sell at my salon is called Xfusion . I'am not sure if it's under the same name or a knockoff but I highly recommend this stuff. good luck