@shanenewton78 asked: "How do I change the tax year to 2023?"
A 2023 return cannot be prepared in Online TurboTax. If you want to use TurboTax for 2023, it will have to be 2023 desktop software installed on a computer. And a 2023 return can not be efiled by TurboTax; it will have to be printed, dated, signed, and postal mailed.
The 2023 software download can be purchased directly from TurboTax at this link:
https://turbotax.intuit.com/personal-taxes/past-years-products/
The 2023 software may also be available for a cheaper price at Amazon, but if purchasing there, be SURE you are buying directly from Amazon as an authorized seller.