Let him know how you feel and what were those things you think maybe harmful to the baby. He has to be the man to solve it otherwise will tarnish your relationship with your in-law. If you are living with your in-law or she is taking care of your baby then either you have to close one eye or move out if feasible.
Reason it out. Husbands tend to be “stuck” in between and I try as much as I can not to put additional pressure on him. I’ll be firm but I’ll explain my rationale
Hi, I would suggest have a details talk with your husband about it as he should consider your feelings as well