@JoshuaPierce77 - agreed you'll be waiting 9-12 months for the amendment to be processed
one thing to check - while you state you did not receive the 3rd stimulus, and that is the purpose of the amendment, it would be worth checking your transcript. even though you didn't receive it, that doesn't mean the IRS hasn't sent it. if you see the $1400 credit on your transcript, then what is going to occur is the IRS will adjust the amendment and then you'll have to submit for a trace.
if you decide the trace is the way to go, don't worry about the amendment, the IRS will remove the $1400 once they process it.
https://www.irs.gov/pub/irs-pdf/f3911.pdf
Status of Processing Form 1040-X, Amended Individual Tax Return: As of July 23, 2022, we had 2 million unprocessed Forms 1040-X. We are processing these returns in the order received and are working hard to get through the inventory. The current timeframe can be more than 20 weeks instead of up to 16. Please don't file a second tax return or contact the IRS about the status of your amended return. Taxpayers should continue to check Where's My Amended Return? for the most up to date processing status available.
