If you take admission in any college, be it Medical, dental or ayurveda, that seat is taken and reserved for only you. And once the the counselling procedure is over, that seat can not be given to any other candidate. If a person decides to leave that seat, it will be wasted

Because of this reason, when you decide to leave the already taken seat, you have to pay the full fees of the entire course to let go of that seat to. So you will have to pay the fees for the entire BAMS course.