Hello student I'm sorry to inform you but no this is not possible as FMGE eligibility criteria says - It's necessary to submit the requisite documents as in evidence to prove that they've qualified the final examination on or before the specified date. So you need to submit the requisite certificate without that your application will not accepted.

For more updates refer to the link mentioned below - https://medicine.careers360.com/articles/fmge-eligibility-criteria/amp