Hello aspirant,

First of all do not worry. If you have made any mistake in your form of admission for college and you have already submitted it, then the first thing to do is to contact the admission/administrative department of the college. You can leave a mail or call them directly and state the problem. They will surely help you out. Either they will ask you to refill the form, or they may open a correction portal as well. The procedure varies from one college to another.

Hope this helps.