Last I amended, the "Where's my amended return" showed up within 10 days or less. I don't remember the exact interval..
The only means IRS has your 1040-X.
Results may not be so prompt these days given the current situation inside the IRS.
Note: when you are not changing any dollar amounts on your amending 1040-X, you can leave all the lines 1-23 EMPTY.
Do not include your old 1040 nor your revised 1040 because they are identical.
