Will My Hair Regrow After Long-term Predmet Use And Switching To Mycophenolate For Myasthenia Gravis?

I am using predmet for almost 2 n half years and now I dnt have anymore hairs on my scalp. I lost all my hairs. I looks like cancer patient now. I was on 60 mg of predmet for mysthenia gravis and all my immunosupprents failed last year. Since then I have been experiencing severe hair fall. Now I am on mycophenolate which I started using it 7 months back and now I am on 8 mg predmet daily. So will my hair regrow and will I get back to my old hair once I am down to 4 mg daily. Please help me regarding this. I have to depend on xtensions to cover my problem.