I filed an amended 2020 return (1040x) through Turbotax on May 14th but it still does not appear on IRS.gov. When will it be processed?

The amended return was filed electronically and was accepted by the IRS (according to TurboTax). It has been over 3 weeks but still does not appear on the IRS lookup tool. I am owed a payment so trying to figure out when it will be processed.