I understand your concern, but you can’t make 60 credits disappear. Remember, universities don’t want you on campus longer than you need to be. The only way you could lengthen your stay would be to change majors completely and even that won’t be enough for a traditional 4 years since I assume that a decent portion of those 60 credits are Gen-Ed classes that everyone has to take.
The main reasons people take college classes in high school are to save money, get prerequisites and Gen-Ed’s out of the way, and ultimately shorten their stay at a university.
Although this isn’t traditional, you may want to look in to other opportunities at UF that may lengthen your stay, such as internships and combined degree programs. I’m curious as to what you thought those 60 credits would be applied to.