https://www.irs.gov/newsroom/irs-operations-during-covid-19-mission-critical-functions-continue

It may very likely still being processed. If you feel it is crucial to push it through, then contact the Taxpayer Advocate Service.

This has been a tough two years and IRS says they are pedaling as fast as they can, but there are still bazillions of unprocessed returns from 2020 and even 2019

https://www.taxpayeradvocate.irs.gov/news/nta-blog-irs-delays-in-processing-amended-tax-returns-are-...