You can see if you qualify for the Free Edition with this Turbo Tax FAQ.
Is TurboTax Free Edition right for me?
https://ttlc.intuit.com/replies/3334660
If you qualify, this Turbo Tax FAQ will show you how to downgrade if you have not filed already.
Can I downgrade to a lower-priced version of Turbo Tax Online?
https://ttlc.intuit.com/replies/3288495
