I amended my 2018 and it was received 10/13/3020. They just started working on it on July 15, 2021. I called today for an update and was advised it will be mailed out on 08/20/2021. I think they are behind because of stimulus checks.
Also the where is my amended return still says they've received it but have not yet processed. My transcripts also show a refund date for 08/20/21.
If you check your transcripts look at the year you're amending. Hope this helps in some form or fashion.
