How do I amend the 2020 IT-140 for my state tax return?

TurboTax has already made updates for the unemployment exclusion so you will first have to reverse those to get your state return to it's original state. 

Sign in and select the "Add a state" option.  

1. In the federal interview in the Unemployment topic edit your 1099G by adding 10,200 to the benefits box 1. 
2. Then go to state interview and proceed to the amendment page and select "yes". 
3. Put in the applicable information from your original return (refund or amount paid). 
4. Select "yes" for additional changes.
5. Then go back to the 1099G entry in your federal interview and subtract the 10,200 back out from the benefits.
6. Select state in the left hand menu and continue your WV return.
7. Select "I'll choose what to work on"
8. Done with WV return at the bottom of the page..
9. Continue to completion

So do not click amend ? Just click add a state? When I do that it starts my state info and nothing about federal as is in your first step. I am sorry to be a pain with all the questions but I don't want to mess this up.