Retirement income you receive while still a resident of CT is taxable by CT as per CT tax laws.
You remain a resident of CT for tax purposes until the day you establish permanent residency in FL.
For tax year 2021 (which you'll prepare early next year), you'll file a part-year resident tax return for CT. FL, of course, has no state income tax.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
