*Check the contract for any break fees. Housing contracts usually allow you to pay a month’s rent (or so) to get out of them. Also check the terms to see whether you’re obligated to stay the term or if you only have to give notice and how far in advance. If so, give notice now. Barring that, check for a clause about subletting/assignment. If either of those is permissible, do that. If they won’t let you do any of the above, just tell the landlord you won’t be showing up. What are they going to do, sue you? They’re legally obligated to look for other renters anyways.
*Note: this is not legal advice and I am not your lawyer. If you want real legal advice you should find a lawyer who can examine your document. This is me just talking off the top of my head. On that note, UF may have a small group of lawyers that help students out in these kinds of situations. You should check.