If you want to file the 1040X manually (not eFile) you can download the instructions and form from the IRS. However, TT is saying that they will be set up to handle 2020 amendments in a week or so. From other posts I've read in the Community, you must have your return in tact as it was submitted for your eFile instead of implementing changes in the interim.
I have the sorrowful task of trying to recreate my return before implementing several changes that are not easy to locate after the fact... so that I can "amend" using TT or just toss all of it, and submit paper forms for everything that needs to be amended now that I already eFiled Federal and need the new information to appropriately file for my State.
