Hello,

First of all congrats for getting 221 in NMAT. I think with proper preparation and strategy you can get admission into NMIMS.

Look case discussion is little bit different from normal group discussion. In case discussion you will be given a piece of paper having problem statement and you need to find the solutions.

Practice different sets having problem and try to think the solution. In this way you can practice .

Also there are few tips which are try to give closing statement at the end and make sure jury notice you.Be gentle with disagreement and speak when the other's person statement is completed.

Now come to PI part. You should have enough points to justify what you had written in SOP. Highlights your strength and prepare some basic questions like why you want to do mba and all these type of questions. If you have a work experience then have a thorough knowledge of your domain. It will help you a lot.

All the best. Hope it helps!