Click on Cancel Amend on the left side of the online program screen.
Then return to the 2021 tax return and delete the W-2 you entered after filing the 2021 tax return. Once that has been completed you can amend the 2021 tax return to add the W-2.
To access your current or prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/
When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state.
This will take you back to the 2021 online tax return. Delete the W-2 you added.