The only way to add information into your return is to amend your return. Here are the following steps how to do that.
To amend your 2016 taxes if you need to make changes and your taxes were already e-filed and accepted (or mailed)
1.Sign into your TurboTax account, if you're not already signed in.
2.In the 2016 tax year section, click amend (change) return.
3. In the pop-up, click amend using TurboTax online.
4.Click continue on the we'll help you change (amend) your return screen.
5.Follow the on-screen directions to amend your return.
6.When you're done, will provide instructions to print and mail your
amended return because and amended return can't be e-filed.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.