As always Mullen says practice will determine the depth chart but he has never really made a QB change this late of the season. The only time he did, the second quarterback had more reps during the year.
https://florida.rivals.com/news/quarterback-question-looms-for-dan-mullen-and-florida
https://florida.rivals.com/news/quarterback-question-looms-for-dan-mullen-and-florida