I completed by tax return but haven't filed it. Now I need to make changes. Because I haven't sent it in, it seems like I need to change it, not amend it. Can I do that?

[DoninGA]

To access your current 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.