You can make the changes as long as you have not yet filed your tax return. Here are the steps to return to the Form in TurboTax Online.
  - Sign into your Online account
  - Click continue on the orange button that says "Take me to my return."
  -  Go to Federal Taxes at the top
  - 
Then go to Deductions & Credits
  - Click Start/Revisit next to Home Energy Credits
  - 
This section will allow you to make changes to the Form 5695. Continue through the section and make the necessary updates.