You cannot downgrade the TurboTax desktop editions.
If this is for tax year 2024 you could ask for a refund and then purchase the Deluxe desktop edition.
See this TurboTax support FAQ for a refund request - https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-refunds/request-refund-turbotax-product/L834M6uyW_US_en_US?uid=m6cogwzy
Are you using the Online version? Is it Premium (not Premier)?
You can try to downgrade but you might have to clear and start over
How to see your fees
For help with fees
https://ttlc.intuit.com/community/charges-and-fees/help/what-can-i-do-to-reduce-my-fees/00/26051