Can you tell us which college? Or confirm it is on this list? If the do no meet 100% of need they may not change your aid for the current year. And there is a chance they say to cover it with parent plus loans.
It sounds like they did your family a favor by not requiring some documentation at the time financial aid was awarded, but now that you are asking for more aid they need that documentation. Does your college require the CSS profile? I am guessing it does not since that has not come up. Most on the list above require the CSS.
How much additional money are you hoping for:
What is the original EFC for 21-22?
What is your updated EFC for21-22?
What is your EFC for 22-23?