I edited the above to add:
To get back to the 1098-T screen, go through the entire education interview until you reach a screen titled "Your Education Expenses Summary". Click edit next to the student's name (you may actually want to click delete, instead of edit, and try again). That should take you to a screen “Here’s your Education Summary”. Click edit next to the section you want to change; tuition, in your case.
It does not matter which return you do first.
