Rathod, there are 2 things to this. You need to score a minimum aggregate of 40% in your 12th in Physics, Chemistry and Biology if you belong to SC Category. And secondly, your aggregate will not be rounded off to the nearest digit. Which means, you need to appear for improvement exams to be eligible for NEET. You can fill in the application form when it is released in December. Eitherways, NEET is in May and the counselling starts tentatively by June/July. So you have ample time to appear for improvement exams and improve your aggregate to suit it for NEET eligibility.