Try going to the place(s) where you entered the information and removing it or changing it to 0, as applicable. As you've found, unchecking boxes won't remove entries from your return.
Here's how to jump around in your return: https://turbotax.community.intuit.ca/replies/3484165
gomy730788
New Member
Jonny1
Level 1
Hofstra0514
New Member
Nabeel
Returning Member
wangd99
Level 1
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.