Should son switch to ED2 (or even RD) from ED1 before decision day, and can he?

Also, the FL schools she is applying to are $6k tuition. Very cheap, but many/most kids have FL Bright Futures scholarship plus auto merit at the more competitive ones. It’s all in around $22k for FL universities before merit. Super cheap. The better students frequently go because they can’t afford private and can’t afford to pass up these prices.