I just realized I have to add two more K-1s to my 1065. I have not mailed in my filing yet, but I can't find a way to open up my Turbo Tax form and revise

[DoninGA]

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.

To enter a Schedule K-1

Click on Federal
Click on Wages & Income
Scroll down to S-corps, Partnerships, and Trusts
On Schedule K-1, Q, click on the start or revisit button

If you used the desktop CD/Download editions installed on your computer, the only copy of your tax data file and any PDF's will be on the computer where the return was created.  TurboTax does not store online any returns completed using the desktop editions.