TurboTax does not allow amended filings online, so this was done through the mail. Thank you!
You are correct. The IRS does not accept amends via electronic filing.
How to track your amended return: Allow 3 weeks from the mailing date then you can track your return. Amend returns take up to 16 weeks to process.
https://www.irs.gov/filing/individuals/amended-returns-form-1040-x/wheres-my-amended-return-1