Start a Free Edition return here,
https://turbotax.intuit.com/personal-taxes/online/
Or if you already started in a higher version, To go back to the Free Edition or a lower version you can try to clear and start over https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-onli...
