Anish, if you have a valid OBC Certificate and you have filled in OBC as your Category in the NEET application form, you are fine. So it is important to know which Category have you filled in your NEET application form. If you filled your Category as General Category, then you cannot avail OBC benefits. But if you have filled in OBC as your Category in your NEET application form, then you are fine and you can avail OBC benefits. This is for 2020 and for NEET 2021, as you have OBC certificate, you should check if the Community you belong to is listed in the Central OBC list. If yes, then you can select your Category as OBC or else, you have to fill it as General Category.