Hello Vinayak, 

The dates of the second and the third round of IPU CET BJMC counselling are yet to be notified by the university. Ther might be a spot round as well if there are vacant seats left. Only after that, the official date of reporting to the colleges will be released. Till then, you can keep a track of the counselling date here - 

https://media.careers360.com/articles/ipu-cet-bjmc

All the Best!