Dear Jyoti, your son will be approximately 17 years and 4 months by December 31st, 2020. And NTA rules state that a Candidate should be atleast 17 years by December 31st of the year of admission. So, your son is eligible for NEET. To just add on, he should have completed his 10+2 with a minimum aggregate of 50% in Physics, Chemistry and Biology. It is 50% if he belngs to General CateGory, 45% for PWD and 40% for OBC,SC,ST.