To get back into your return to complete your State
Log into your TurboTax Online account
Select
My TurboTax
My Tax Timeline
In the Some things you can do area Select
Add a state
This will let you back into your return
Select State Taxes
On the
Let's get your state taxes done right page
Continue
Select Delete
Confirm
Run Federal Review
on the Let's get your state taxes done right page
Continue
Add State
Add your state
Continue and finish State
I hope this helps