Hi.

According to SCHEDULE OF ONLINE CHOICE/PREFERENCE FILLING FOR COUNSELLING IN B.TECH (THROUGH JEE Main Paper-1 of 2021) PROGRAMME,CET CODE 131 FOR ACADEMIC SESSION 2021-22 (Date 30.09.2021),

Candidates will be given the opportunity to edit/modify/add/delete preferences after the allotment of seat in Round 1 for the subsequent round of counselling.

Therefore, after round 1 ends you can add your choices for colleges.

Good Luck