We're filing married and my wife made a backdoor roth contribution in Jan 2024. What are the steps to report in turbotax for 2023 tax filing?

It is a 2 step process to reporting the backdoor Roth.  You can follow the instructions in this link to report your backdoor Roth, using the link for either TurboTax Online or Desktop. 

Thank you!  So to confirm, if we did not receive a 1099-R for 2023, since the traditional IRA contribution which was converted to a Roth IRA in 2024, we should only complete step 1 outlined in your message?

Yes, you only do the 1st step as mentioned by @Vanessa A, since step two involves reporting the Form 1099-R, which you won't receive until 2024.