It’s usually pretty easy to log in & out of the FAFSA & to make changes. Your experience highlights the importance of writing down any passwords and save keys, to make it easier to get back in later. Once the FAFSA processes, your D should just be able to log back in, delete two schools, add in two schools, sign & submit the changes. I don’t believe that the parent has to sign that change, but I could be wrong - make sure your child verifies that the change is successfully submitted.