You already filed and it was Accepted? Then anything you do in Turbo Tax won't affect the filed return. It could only mess up your copy in Turbo Tax. So be sure to save a filed copy pdf to your return before you go looking around. Save both the pdf and .tax2021 files to your computer.
Save the PDF
https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-pdf/00/26...
Save the tax file
https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-tax-data-...
