you dont seem to understand what a minoxidil shed is...havent you read other accounts on this site? a lot of people have said things like getting off minoxidil was the worst mistake theyd ever made etc, and ive seen lots of posts from people who got off it warning everyone to stay on it. and they then got back on it.
you may feel like you havent grown any hairs on minoxidil. but most likely, youve continued to lose your hair and the minoxidil has regrown hair in its place.
personally, i think you shouldve just started on finasteride if maintenance was all you wanted. but seeing as youre on minoxidil, dont get off it. stay on. finasteride and minoxidil are a good combo and youre likely to see good results once theyve been working *together* for at least 6 months. if you quit, be prepared for a heavy shed...shed meaning one that most of which wont grow back.