How can I tell if my amended tax return was processed by the IRS?

I amended my tax return because I put in some info incorrectly, which made me ineligible for receiving the third stimulus check (I am eligible for it). I corrected it in the amended version, but it has been a month and there has been no update on whether or not I am going to receive the stimulus. I checked the IRS online "Get my payment" app, but it says that they have no info for me, and all I see on my tax home is that the amended federal e-file has the status of "accepted" but no info as to whether I am going to receive the third stimulus check. I was wondering if it is possible that my amended file hasn't been processed yet, or there is some other issue that is causing it to be held up.