When will I be able to e-file a 1040X on the TurboTax app for 2020? After electing to amend my return, TurboTax says the "amends area" is not yet ready. When will it be?

Just as the title says, I need to amend my 1040X return after having e-filed digitally using the app TurboTax 2020. But clicking on amending my return just says that the IRS is "still preparing" the "amends area". When will this be ready to use? I need to amend and re-file asap.