Is FAFSA first come first served?

I’ve been told FAFSA is first come first served so I submitted in October.
I went back to add a school onto my FAFSA cause I realize I wanted to apply to another school but then it said I have submitted FAFSA again. Does this mean that I won’t be one of the “first ones” that applied anymore?

I live in California btw.

any federal or state aid that you are entitled to, you will receive. Other aid such as SEOG, FWS is limited and based on the school’s availablity and may be disbursed on a first come first served basis to the most needy students.

No, you will still retain your “place in line” for the first set of colleges that you submitted FAFSA to.