To access your current or prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/
When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state.
This will take you back to the 2023 online tax return to make any changes. In the My Info section of the online editions you can edit the dependents entered to make changes to the SSN. After making the correction go the File section of the program to e-file your tax return again. You have until October 20 to make changes and e-file the 2023 tax return again.
Do you have more than one TurboTax account? See this TurboTax support FAQ for how to view all of your accounts - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/many-intuit-accounts-...