Ok, then I think you are over thinking all of this.
If you do not want additional aid for this year then the school will just need to wait for the IRS to catch up. You have made the adjustment to the error. No one is going to arrest you for an error on the FAFSA during Covid while a parent is retiring and you are at a community college. Just document you made an effort to correct this and move on.
If on the other hand your MD community college requested the documentation to move forward, then let them know the IRS still is the hold up.
Are you transferring to a four year college for 22-23 or do you have an additional year at the same CC? If you are staying then they should be able to see next years is correct and may be able to just move on.