Dear student,

The simple answer to your question is - YES.

Every year the jee mains special round counseling is held for filling of vacant seats in nits or iiits or gftis. And this jee mains special round counseling is called - CSAB counseling.

Csab counselling is held after the completion of josaa all round counselling. After that you can participate in csab round counseling for hoping to get a seat among the vacant ones in nits or gftis, etc.

The dates of csab 2020 counseling is still not released yet. So it's better that you check regularly the official site of csab. And beware of csab fake sites.

Also check out the following link to know more about csab counselling and previous year cutoff :-
https://engineering.careers360.com/articles/csab-special-round-for-nits-iiits-and-gftis