I'm indoor only, but I have tomatoes outside. The ones I planted in the native soil are yellowing, small, unhealthy looking, and have little to no fruit. The ones that I put in raised beds that were a mixture of promix, miracle grow, and native soil are looking really nice and have a bunch of fruit.
The raised beds, in addition to having better soil, have a lot better drainage.
The plant looks overwatered and nutrient deprived. Whether the deprivation is from not having the nutrients or from a lockout is hard to say.
Build a little bed and transplant it, that sized plant in the Florida sun is worth the effort. Flush it and get it on the same schedule as your indoor...and give it as much attention...