Actually, if you enter your Mortgage Interest and Property Tax in the Rental section first (the full amounts), TurboTax will calculate the amount that applies to the Rental (for the part of the year you rented), and put the balance on Schedule A for Itemized Deductions for the portion of the year that you personally occupied the property.
So you can go back to your Mortgage Interest/Property Tax deductions (in the Credits & Deductions section), and delete your entries there, so that you won't be double-counting these deductions.
Then return to the Rental Section and step through those screens again (with the full amounts) so TurboTax can calculate the amount to transfer for you to Itemized Deductions. Be careful with the question 'was the property rented every day in 2023'. You need to say 'Yes' here, as it is referring to the time it was designated as a rental.
Here's more info on Converting Primary Residence to Rental.
@cmahannah
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