Upgrade app to EasyTables

Hello,

I need to upgrade a mobile app to EasyTables: myapp.azurewebsites.net/

I already have some web.apis working, but when I try to active the EasyTables, I get the warning:
"I acknowledge that this will overwrite all site contentes".

I want to keep the endpoints that I already have, I want to activate EasyTables only in some tables for testing purposes.

Is this possible ? A hybrid EasyTables ?