Disconnected R/S

Sighhhh! During my pregnancy my bf was prefect ! He was patient, he was loving, he was caring, he did ntn but shower me with love. After having our baby things are starting to feel different. He comes by and just watches movies, he holds the baby maybe once or for a little while, he eats offers me some of what he has, and then sleeps on the couch in the bedroom and later comes into bed. He might kiss me, or spoon me might. But I feel so disconnect from him I know I’m busy with the baby but I still want love from him but I feel so sad and angry with him. I literally have to lay down and try to cuddle with him, I had to ask him if he comes here to help me with the baby or just for me to have someone here he says both and that why don’t I ask him if I need help but why do I have to ask. I know he works so he is probably more tired but I need a break too. I told him we need to sit down and talk about us. But now idk how to even discuss with him that I feel lonely with him. I don’t want to break up especially not with us just having our baby and he is a good guy ☹️