Problems with SO

SO and I have been together almost 6 yrs.

We’ve had ups and downs but I’ve begged him for this relationship. And I’ve asked him to care about us. I know I shouldn’t have to, but we have a three year old together. And he was my first, my all. And it’s just so damn hard to let go. I want this. But I just don’t think he does. I try not to argue in front of Little one. But rn I was just so overwhelmed because we had kept fighting. We won’t talk to each other and he just doesn’t make me feel important anymore. I don’t know what to do. I’ve already tried talking to him but it seems like he always flips it on me and points out only what I do wrong. I’m frustrated and heartbroken. I know if I walk away it’s going to be permanent. I just hate how I feel I’m putting 90 and getting 10 from him. I just don’t know what to do.