A close friend of mine is a confirmation sponsor and his sponsee and the sponsee's family are really angry at him and yelling and swearing at him whenever he tries to talk to them because he took the opposite side in a argument instead of theirs. The sponsee and the sponsee's family is nominally Catholic and very immoral too.
How much does he (the confirmation sponsor) still have to do with his sponsee to not sin? Does he have to try harder to amend with the immoral sponsee to not sin? He is not his baptismal sponsor. Just confirmation.