I need to correct a mistake I found after printing my return but before filing it. I tried to fix it but got an amended return instead. I just want to fix my original.

[DoninGA]

To access your current or prior year online tax returns sign onto the TurboTax website with the userID 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 2019 online tax return where you can make your changes.

[Critter-3]

If you clicked on the AMENDMENT option by mistake then you must UNDO it first before correcting anything ...

click "Cancel Amendment" on the left side of your screen.