My son got 89.69in jee main... Kindly guide me accordingly

Hey
It would to be tough to get into NIT with this score, but still you can check for lower NIT with previous cutoffs on the following link
https://www.google.com/amp/s/engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches

You can go for top private colleges like Thapar University,  Jaypee Noida, etc.

For other available colleges with your rank you can check on our college predictor link provided below
https://engineering.careers360.com/jee-main-college-predictor

Hope this solves your query.
Good Luck!!