Hi, Yashasvi,

There is no wrong time for the first attempt at anything in your life, do remember this in all walks of life, trust me this helps a lot.

Talking about NMAt, considering the preparation time, if possible you can take a years gap, and while doing an internship in this period you can prepare for NMAT.So complete your final year then go for this.

All the best.

hi, 

when you are in your third year by october time you can enroll for the exam 

I hope this helps you out 

All the best to you