You can use this IRS web site to track an amended return form 1040X that you printed, signed and mailed to the IRS: https://www.irs.gov/filing/wheres-my-amended-return
In normal times, it takes the IRS about 16 weeks to process an amended return. It's probably taking a lot longer now because the IRS is currently not processing any mailed returns.
In normal times you would be able to check the status of an amended return about three weeks after you mailed it in. You did mail it, right? Amended returns must be mailed--they cannot be e-filed.
But with the pandemic, mailed returns are not being processed right now. So it will be longer before you can see anything about your amended return on the IRS site, and a longer time than the normal 4 months for it to be fully processed. Sorry.
Per the IRS website IRS Operations During COVID-19: Mission-critical functions continue: The IRS is not currently able to process individual paper tax returns. If you already have filed via paper but it has not yet been processed, do not file a second tax return or write to the IRS to inquire about the status of your return or your economic impact payment. Paper returns will be processed once processing centers are able to reopen.
If you mail a tax return (or a payment) to the IRS, it is a good idea to use a mailing service that will track it like UPS or certified mail so you will know it was received.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.
TurboTax will not know anything about your mailed return, and will continue to show “Ready to Mail” on your account. TurboTax will not know that you put your tax return in an envelope and took it to a mailbox. TurboTax does not get updates on mailed (or e-filed) returns.
When the IRS finally opens its mail and begins to process mailed returns you can check the status on the IRS site.
https://www.irs.gov/Filing/Individuals/Amended-Returns-(Form-1040-X)/Wheres-My-Amended-Return-1