When you are ready to start your new 2024 return you will be asked if you want to use a tax file that is on your computer. You are going to want the one called .tax2023 to transfer in to 2024.
How to transfer last year’s return?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/transfer-last-year-return-turbotax-online/L279eUvY2_US_en_US?uid=m6ayqk1s