First all personal returns are blocked from efiling as the IRS switches to the 2021 program ... blackout period happens from about thanksgiving until mid January so NO ONE can efile anything during this time not even professional programs.
Next ... if you wait and pay a professional to file the amended return you can do it sometime mid January next year however you will never be able to do it thru the TT system.
And no matter which way you file it will still take the IRS months to process it due to the backlog so don't expect anything quickly. And when you efile the 2021 return make sure you use the AGI off the original return not the amended one.
