Hello sir,
To take admission in top NIT's the rank is less than 10,000 .But in different NIT's there is a different cut off .when you get 65% in SC,ST category and 75% in general and OBC category in 12 th class and clear the cut off of JEE mains then you are eligible for JEE advanced .But to take admission in NIT's cut off is most important for selection.

To check the Cut off for NIT's use the link:
https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches

And you can also check the college predictor tool:

JEE Main College Predictor link

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Thankyou!

Hello,

According to last year's cutoff, there are very less chances of getting a seat in top NITs. You can refer this link for 2019 cutoff for top NITs. https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits

However, you can ask him to go for other state counselings like M.P, Haryana, Punjab ,etc. You can use the college predictor tool to know about all college predictions based on his rank in JEE main. https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Best wishes.