Custom integration hook

Hi,
i’m trying to integrate mc4wp to registration form ( with custom fields ).

I used “mc4wp-” prefix in every field, but it is working only with custom integration option.. (Sadly its hooked on action INIT .. so it is always change the values in mailchimp, not looking if the user registered sucesfully or not). I’ve did not found the way how to override the add_hook method.

Is it possible to add this funcionality also for registration form? Or add some custom parameter that disable the INIT LISTEN and CALL IT LATER (“user_register” action)

Thank you for help