FAFSA revision

I filled out the FAFSA for my son and indicated that he was the only one attending college in the house. I submitted the FAFSA to his college back in October.
Just now my daughter has been accepted to graduate school. I don’t know if I should/need to revise my son’s FAFSA to relect this change.

My daughter will fill out the FAFSA independently of us according to the FAFSA website. This makes me think that her going to school won’t impact his FAFSA (even though it impacts our wallet).

Opinions oh wise parents?

Thanks!

The question is: Will you provide at least 50% of the grad student’s support in the academic year in question? If the answer is yes, that student will count in the parent’s household size & # in college. The grad student, on the other hand, has a household size & number in college of 1.