Hello Nitin

It is difficult to predict the actual rank or JEE Advanced qualifying marks as for the first time JEE Main is being conducted twice and rank will be based on NTA percentile score but as per the formula, your expected rank will be around 483,443 - 548,443 and your probable category rank range will be 38811 - 42811.

This is just the probable rank and the Overall Rank Predicted here is on the basis of the expected total number of students i.e. 1150000 appearing in the JEE Mains April Session.

With this rank, chances are less for admission to NIT Silchar and other NITs and other Engineering colleges.
I would suggest you to appear for the JEE Main April exam and try to score more in that exam.

Good Luck!