How do I keep working on a return marked "printed, ready to mail" by TurboTax, but I need to add to? Nothing has been sent to IRS so I don't t need to do 1040x.

I wanted to preview and download my 1040 still in progress, but must have done something wrong. I selected that I would mail in forms to IRS, so nothing was electronically filed. I am trying to modify my return, but TurboTax (business/self-employed) thinks return is finished, and says "Federal Printed, Ready to Mail." The options available seem to only amend the return, thus creating a 1040x. I never actually mailed in the return downloaded so I do not need a 1040x, I need to just continue working on the return without doing it as a 1040x. Anyone know how to perform this?