how do I include form 5329

You need to amend your 2023 tax return. Then, proceed as if you are entering a Form 1099-R:

1. From the federal menu in TurboTax navigate to Wages and Income
2. Find the Retirements and Investments or IRA, 401(k), Pension Plan Withdrawals (1099-R) section 
3. Select Start, Revisit or Edit/Add next to IRA, 401(k), Pension Plan Withdrawals
4. Indicate that you did get a 1099-R statement if necessary

Continue past the screen where you enter the Form 1099-R and you will come to a screen that says Did You Miss a Required Distribution From Any Retirement Accounts? Check the box on that screen that indicates the type of RMD you missed:

On the next screens you can enter the amount of the RMD that you missed.