After you file

@k7acz  please read this from the IRS website.  do note where you need to be checking for the amendment progress; however, given how woefully backlogged the IRS is, assume it will be 9-12 months (no kidding) until it is processed. 

 

Status of Processing Form 1040-X, Amended Individual Tax Return: As of August 6, 2022, we had 2.1 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.

 

note that it's "more than 20 weeks" so the IRS is not committing to any upper limit (like I stated, assume 9-12 months!)