Your post indicates that you're using the most expensive TurboTax Online program. You can downgrade to the Free program (and begin again) by using the Clear and Start Over feature IF you haven't yet registered your product or made payment. Just keep in mind that all the entries you've made will be deleted.
You "may" still need to upgrade from Free Edition to a paid edition, but the program will notify you at that point.
See the instructions for using the Clear and Start Over feature in the TurboTax FAQ linked below.
How do I clear and start over in TurboTax Online?
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
