You can start over your return again by following these instructions which will take you to free version where TurboTax will take you to version that is most appropriate by the information you put in:
https://ttlc.intuit.com/replies/5679902
Here is an alternative solution to go to a free version called Freedom Edition, and here are the rules and how to do start this version:
https://ttlc.intuit.com/replies/3301359
