FAFSA Help!! - Graduate School

I will be finishing up my undergrad in a few weeks and going to grad school this fall. I filed a FAFSA months ago for 2018 - 2019. Do I just make a FAFSA correction and add in the grad school I’m going to in my list of schools, or do I submit a new FAFSA?

You can add the new school, but you need to make the correction that you will be a grad student and no longer an undergrad.