Rohan, NTA has released the official bulletin for NEET 2020 and it says that a Candidate who wants to appear for NEET should atleast have studied Biology as an additional subject if not as a core subject in his/her 12th. Now NTA is a National level exam and is not conducted at State Level and so the National Medical Commission will have the last word and it says that you should have atleast studied Biology as an additional subject to be eligible for NEET.