Here is Massachusetts' rule on changing one's domicile:
A new domicile may be acquired only by:
-Abandoning the current domicile
-Establishing a residence at a new place, and
-Intending to make the new residence one's home permanently or for an indefinite time, with no certain, present intention to return to the previous home.
https://www.mass.gov/service-details/learn-about-legal-and-residency-status-in-massachusetts
It would seem from your own statements that you never intended to make your Florida residence your permanent home nor to stay there for an indefinite time, as the Massachusetts rules require. Therefore it appears that you did not establish a new domicile in Florida. Note that, in tax terminology, "residence" and "domicile" do not necessarily mean the same thing . You can have several residences, but you can only have one domicile.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
