Depending on the colleges sub systems, the change and not change options will depend. As you didn't mentioned the name of the college, I would recommend you to contact the helpline number of the college you are applying in and get it discussed they can guide you out.

If you are applying for state university colleges, for most cases there are no options to change and you have to apply a fresh candidate. But I would highly recommend you to contact the college authorities as soon as possible or due to discrepancies during physical verification you application may get cancelled.

I hope this answer helps. All the very best for your future endeavors!