You can have more than one return. You just need to save it as a different file name. You just start a new return. I've done this when an import did not go corr...

To second Champ's info. If you start with the oldest return and complete it, when you start the next year's Turbo tax will pull info from 2017 for your 2018 ret...

The easiest way is to go back to the summary section on deductions. Select the Medical and Edit. Then add in the longterm care.