Hey Bhavna!

In case you apply for a particular college and course in the first cut off of University of Delhi(DU) and you wish to take another college in the second cut off then you can do so by cancelling the admission in the college in which you had applied in the first cut off and then you can head off to take admission in the second cut off in the college and course of your choice. It should be noted that in one cut off, applicant can take admission in one college only. Make sure that in the second cut off you are meeting the eligibility criteria and cut off for the college you wish to seek admission in because once you cancel the admission from the first cut off, there is no going back. So, be attentive and check the eligibility criteria and cut off thoroughly and then only proceed to cancel the college from the first cut off.

Hope it helps!