Hello Chaitanya! If you are satisfied with your result and the college that you are getting you can go for it. If you are not satisfied with the result and you are not getting the college of your choice you should go for it again. If you take a drop, utilise this year by taking up a job or an internship or learn a new language or work with an NGO. Indulge yourself in something so that you can show to the panel later that you used your gap years productively. Hope this helps.