you are correct. please note
Updated May 11, 2020
IR-2020-68, April 9, 2020
WASHINGTON — The Internal Revenue Service today reminds taxpayers and tax professionals to use electronic options to support social distancing and speed the processing of tax returns, refunds and payments.
To protect the public and employees, and in compliance with orders of local health authorities around the country, certain IRS services such as live assistance on telephones, processing paper tax returns and responding to correspondence are extremely limited or suspended until further notice.
When you file an amended return, if you are getting a refund for it, your refund is always in the form of a paper check mailed to the address on your amended return. It will not be a direct deposit.
The IRS is not working on mailed returns now---and an amended return can only be filed by mailing it in. Under normal circumstances you would be able to see something about your mailed in Form 1040X after about three weeks, but that is not the case right now. The usual 4 months for processing an amended return is going to take longer. Sorry.
MAILED RETURNS
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.
TurboTax will not know anything about your amended return, and nor will TT know that you put your 1040X 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