I said I had a w-2 but actually it's a 1099-MISC. How can I correct this? TurboTax wants a w-2 since that's what I said when I began.

To enter in your 1099-Misc please take the following steps. 

1)    Sign into TurboTax Online

2)    Continue your return by click Taxes > Tax Timeline > Take me to my return.

3)    Click on the Federal Taxes tab (Personal depending on version)

4)    Click on Wages & Income sub-tab (Personal Income depending on version)

5)    Click Jump to full list or Show all income (if needed)

6)    Scroll down to  Self-Employment click on Show more.

7)    Click Start/Revisit next to Income and Expenses.

😎  Follow the prompts to enter in your 1099-Misc, 1099-K, or other self-employment income.

Please see the following FAQ article for additional information. https://ttlc.intuit.com/replies/4801198

If you started to enter a W-2, please complete the following steps to delete it from your return. 

Click the Federal Taxes tab (Personal depending on version).

Click Wage & Income (Personal Income depending on version)

Find Wage & Salaries, Form W-2 and click Revisit.

The W-2's you've entered will be listed. Click delete to the right of the one you want removed from the return.