You can try these steps to review your return. You can only make changes if you have not already filed.
Please follow the steps below to view your return.
In TurboTax Online, sign into your account.
Select Tax Home in the left menu.
Scroll down to Your tax returns & documents.
Select 2018, and then select Add a State (you're not actually adding a state, this just gets you into the right menu).
- Go where ever you need to go.