How to change from Deluxe to Basic once information has been entered.

To see your fees, click on Tax Tools on the left side of the screen. Then click on Tools. You will see My Fees in the center of the screen. 

If you want to downgrade, this FAQ will tell you how: How do I downgrade to a different TurboTax Online product?

See this TurboTax support FAQ for how to downgrade using the online editions - https://ttlc.intuit.com/turbotax-support/en-us/help-article/change-service-level/downgrade-lower-priced-version-turbotax-online/L2IDaMvkt_US_en_US?uid=m7z4evzc

Or-

If you have not paid for the online edition you are using, have not filed your tax return or registered the Free edition, then you can clear your return and start over with a lower priced edition. Click on Tax Tools on the left side of the program screen while working on the 2024 online tax return. Click on Clear & Start Over.