My mother Inlaw is getting on my nerves. She's trying to control the situation of me being pregnant…

My mother Inlaw is getting on my nerves. She's trying to control the situation of me being pregnant and my son. She treats me like I don't know how to mother a newborn or how to do things the correct way. It's very irritating. I told her nicely today I know your just trying to help but I know what I'm doing. So hopefully she backs off a little bit.