No results after using mintop 5% for 1yr

Previously I'd extreme dandruff in my hair and was having drastic hair fall. So I decided to shave my hair, after shaving my hair my hair fall reduced without applying any medicine, but didn't stop. Since then I've been using mintop forte 5% soltn twice a day daily along with finax 0.1mg and multivitamins tablet as prescribed by doctor. But even after using mintop forte 5% almost throughout a year, I see no improvement in my hair density, the hair density is same as before, no new hair come out. I'm loosing hair while rubbing my hairs during shampoo but surprisingly when I brush my hair there's no hair fall. Shall I stop using mintop as I think it's not working ? Because hair density is same, no regrowth even after daily application. I don't know if I've male pattern baldness or not. I've dandruff and diagnosed with low vitamin B12 in recent blood test. I'm quite worried about the real reason of hair fall, a bit of my scalp has become visible and there is no re growth of the fallenhair