i originally chose to mail my return but now want to efile how do i enter my return again?

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 2024 online tax return.  Click on File on the left side of the online program screen.  On Step 3 click on Revisit.  Change to e-file from mail.