How do you let you mum-in-law know that you will be calling the shots on the upbringing of your child (without sounding rude)?

this is hard especially when your husband is mama's boy. what I do is lay out facts why I do things that I do to my husband and hope that he'll the one that voice it out. Otherwise I'll just nodded to what MIL says but disregard doing the advice cause sometimes even responding sounds rude. By all means they only wanted to help and share I guess. However it's my baby and it's gonna be my way😊