Hello, 

As per your query, i would say that whatever changes are made those will be for students who take new admission not for those who already are persuing the course. If such changes are made for already persuing students, they will be notified by the college as well as will get notifications and information on its official site. 

For exact further information on jimper pg exam, check out this link- 

https://medicine.careers360.com/articles/jipmer-pg-eligibility-criteria

Good luck