Hi Sumit
Please mention the name of the engineering colleges or exams so that I can provide you with a specific answer.
However, for JEE Mains, the common counselling for JoSAA will commence in June tentatively.
Refer to the link below to know more:
https://engineering.careers360.com/articles/josaa
Hope this helps!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile