For 2023, you have a choice for home A. Either make it your secondary home all 12 moths (no rental) or make it your secondary home for 11.5 months and rental for 0.5 months. If you select the latter, you can deduct 0.5 months (1/24th) of the interest and property taxes as rental expenses on schedule E and the rest will be deducted as mortgage interest and property taxes on schedule A. In this case, you would begin by entering your rental information under the Wages & Income tab and scroll down to Rental Properties & Royalties. I don't have rental property so I can't walk through the steps, but Turbo Tax should ask the right questions to split things up for you. When you get to the Deductions and Credits section, home A will selected as 'Secondary' because you lived there for most of the year.
To keep things simple, you can always treat home A as your secondary home all year and not treat it as a rental until 1/01/2024.
