Dear Ram, the criteria for NEET PG are that you should have atleast provisional certificate of MBBS degree and you should have completed orcwill complete 1 year compulsory internship by March 31st 2019. The criteria doesnt mentiin anything about the no. of years you have completed your degree in. So, you can write the exam and if selected, I dont see any reason why there should be any problem. Good luck!