Male Baldness Info

my hair was thick and since i been bulimic for about 5-6 months i noticed my hair was thinning all over and mostly on the top like my hair has a really thin spot as a oval on the top of my head and like really thin half way down my sides of my head and in the frond like the peaks of my head is rly thick to where it used to be.. this isn’t a male pattern baldness i am sure but i think and my hair is really greasy now idk why. i lost my hair due to bulimia .. i have stopped bulimia due to hairloss soo i have been taking biotin pills to help my hair. if i keep taking biotin pills and eating right without throwing up will my hair grow back thicker to where it was.. and how long will this take? please help i am concerned i am only 16.