You haven’t prepared for the NEET PG in UG days. Is it possible to do it in an internship? Look nothing some courageous or extremely motivational words. If you take it practically then if your college has hectic internship duty which most of it have. Then its very difficult to crack in one go.( I excluded qota or reservations). But yes if you prepare well then it will definitely going to help you in some way or the others, if not this attempt thn in your upcoming attempt.