You should form a plan to leave and move out or get him to move out.
I know it’s difficult to leave right now. But think about the future. Your son is learning these skills and abusive language and may very well use it against his future girlfriend. You don’t want another woman to go through the same thing! Think about why are still with him and if it’s because of your son it may not be the right choice. I’m sorry you’re going through this. No woman deserves to be treated this way 🥺
I feel that, in a sense, I'm married to the same man. He belittle s me all the time, and he is also a narcissistic person. What I learned to do is to lean on your deep friendships for your personal issues, go heavy on them sharing g your struggles. And go easy on your partner, not laying all your frustrations on him bc he will never understand what you're really going through with all baby/ postpartum/ beaching a new mom aspect of your new life. Vurtual long slow and tender hug girl!
Document everything. Photos, screenshots. Note every time he name calls in your notes app. No one deserves this kind of treatment. This is not the kind of life you were meant to live. Do you have anyone who can help you get out?