Hello,

Nothing can be done now. You have to contact COMEDK help desk to solve the issue.  Visit the link :- https://www.comedk.org/contact-us/

Write a mail or make a call. Describe what you made mistake and ask them to rectify it if possible. They are the right person to guide you with authority.  On saturday and sunday, help desk is not available so try on monday.

Hope it helps!