Boyfriends mom is a narcissist

I’m struggling in my relationship. I love my partner and we have a son together. Our biggest issue is his mother. She’s very narcissistic and controlling. His grandma can be the same way at times. They tend to guilt tripping him to doing things they want him to do. If he says no they make it seem like he’s going against them. His mom wants to calm 24/7. Even this past Valentine’s Day while we’re were trying to have a romantic evening they kept calling him over and over to just chat. Today his grandmother told me that I should have been to bed ear lit on Valentine’s Day because I work. I got upset because what I do in my house is none of their business. I feel they were just upset because he turned his phone off that night to keep them from calling. His mom guilts by saying things like “ you know I have no friends” she’s not in a relationship either. On the weekends I’m off so I try to have some time for us because there are two kids in the house and we are busy with them. His mom constantly calls at night on the weekends to stay on FaceTime. She calls at 3 am too because she’s up lonely. She told me that it will be just him and her forever. She’s very young (42) and tries to act like someone in her twenties. Very manipulative and rude. When the attention isn’t on her she gets rude & makes things about her. I don’t know what to do. I’m at a point where I don’t want to be around her at all or talk to her but I can tell my boyfriend is hurting because of how me and her are. I don’t know what to do. But it’s very draining having your boyfriends mom narcissistic