I need to do the same thing in terms of amending my return. I have filed my 2020 taxes, it's been accepted, I go into Turbo tax and choose to Amend my form and after a couple of screens get a message saying "The IRS is still working on the amended return area for 2020. That means this area isn't quite ready yet." Then it asks for you to check back. However, when I google this form, it looks like the IRS approved the form back in January 2021 so I'm confused as to why this isn't updated in Turbo Tax. I checked and all of my updates have been done.
