You have to check each college for residency requirements and exceptions to those policies. Which means finding someone who knows this stuff at each school.
It’s usually not that difficult to get residency in a state. You move there, get an address with a lease as proof you live there. Register to vote, get bills sent to your place and get a state ID card. Done. You are a resident as far as FL is concerned.
But not for all purposes. If you work in other states or have certain business connections there, those states can claim you as a resident for tax purposes.
Colleges have different criteria. Even within the same state, different schools have rules for state residency and they can vary for application purposes, scholarship purposes and in-state tuition purposes.
You want in-state tuition. Some schools require students under age 24 ( unless veteran , married, etc) to be resident of state of parents. In other words, for you, to whatever state your custodial parent is paying state income tax, is considered your state too. A one year or other time period of residency also often required.
But some schools have exceptions. Or have programs with exceptions. FSU has some such programs. You have to look up what’s out there
So, you see, it’s not a simple, cut and dry answer b