Hi aspirant 

Chances for NIT is less but you may get IIITs and GFTIs.

Most probably you will qualify JEE mains so its time for you to prepare for JEE advance.You might get into IITs.

Or if you wish to improve then you can reappear in JEE april session .If you are scoring more than 96%ile ,then definately you may get in NITs.

You must apply in them.Visit the link given below to see the previous year cut off of NITs.

https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits#

Prepare well for JEE mains here:

https://www.entrance360.com/knockoutfull-jee-main-april/?utm_source=c360&utm_medium=exit-intent-ct&utm_campaign=knockoutfull-jee-april

Copy and paste the links in new tab to open.

Hope this helps you.