I was interested in your question because I really like prolotherapy, and my husband is a veterinarian who does it, but we are in New Mexico.
I did find some veterinarian who do this by searching online, but since I am not familiar with Florida geography, I don't know if they would be considered as "central Florida".
That one is in Naples, Florida.
And if you contact the American Holistic Veterianary Medical Association, they list their members by state
I have seen my husband really help some of these dogs without surgery.