Hi aspirant, since you have 3107 rank in JEE Advance and 2458 rank in JEE Mains so based on your these credentials I can only say that if you are very sure to go with CSE branch so at your JEE advanced rank it seems difficult that you may get any seat in top IIT's but if you go with your JEE mains rank than there are very good chances that you may get a seat in CSE in any NIT.

Now the final decision should be yours.

And you should also know that top NIT's are even better than most of the IIT's as well.

Thank You.