Deductions & credits

It depends.

I am assuming you mean the desktop or downloaded software when you say "the full TurboTax".  If so, you can make your correction as follows:

1. Log back into your TurboTax account
2. At the top of the screen, select the Personal tab
3. Then select Deductions & Credits
4. Select I'll choose what I work on
5. Under Your Home, select Mortgage Interest, Refinancing, and Insurance and select Update
6. On the following page, you will see a list of everything under the title Home loan deduction summary
7. Edit as needed or select delete if you have a duplicate entry here