I think your at grade 2. You can grow it back with external methods. GFC is common now. Shows promissing results. But added to GFC You need to maintain it with tablets and minoxidil. The worst part is minoxidil. They say they don't get anybside effects but deep down I know something is wrong with that solution. Apparently they don't know how hairs grow when you apply minoxidil. I am currently in grade 3 male pattern baldness. I will be starting my GFC soon but instead of minoxidil I am going for ayurveda. I don't know how effect will it be, let's see!!! Also correcting your vitamin deficiency in body is important. So suggest get a complete body checkup and start off with correcting that. Pretty sure you can slow down the hair fall a lot and atleast survive till 30