I started with chewable Biotin. I would take 2 a day and then when you start seeing it improve then go down to 1 a day. I started taking it 3 months before surgery for this very reason. My hair was already thin and nails never grew - but after 90 days of this my nails are long and strong and my hair is so much fuller. Hopefully in the 90 days after surgery it wont be to badly affected. However, starting it now will help. It was amazing the changes in just 90 days of taking it. Truly helps.
Congrads on the weight loss. Keep up the good work. Dont let this get you down....Its just a stage and it will pass.