@fanfare - any chance the check was lost in the mail? anyone followed up? 3 months is an unreasonably long time post 'complete' status.
backlog now down to 700,000:
Status of Processing Form 1040-X, Amended Individual Tax Return: As of December 3, 2022, we had 700,000 unprocessed Forms 1040-X. We are processing these returns in the order received and the current timeframe can be more than 20 weeks. Please don't file the same return more than once. Taxpayers should continue to check Where's My Amended Return? for the most up to date processing status available.
