Absolutely this. This is the script for men like him, so you need to be aware.
You will get countless sorrys, then when it doesn't work he will start getting nasty and using emotional blackmail. He will say "How could you do this" "I thought you loved me" "You know I love you more than anything" "Think of our child"
THEN, when that doesn't work, he will start being really nasty. You'll get "You're a terrible mother/partner" "You can't survive without me" "You've ruined our family" etc etc.
THEN, when that doesn't work, the sorry's will start again.
THEN, when that doesn't work he will blame you for his mental health. You will be driving him to suicide. He can't live without you. If he can't have you he doesn't want to live.
THEN, when that doesn't work he will threaten to take your child away. He will say that you're mentally unstable and can't care for him yourself. He will say he's going to court for full residency and at the very least he will get 50/50 and you will be kept apart from your child - and it's all your fault.
FYI - It's all bollocks. He's an abuser, and if you don't leave now it will happen again. And again. And again. Over a long period of time. He will grind you down, he will make feel worthless, like you need him, like you can't cope without him. You will have no friends, he will cut you off from your family. And you will be so alone. One day you might have the strength to leave, but it will be so hard without the support you have now. Your child will be at an age where he can manipulate him/her and get them onside.
OP. I and many others on this thread have been there. I'm sure we all agree we had left much earlier than we did. If you can do anything for your child right now, it would be to get them to a safe place away from this abuser, so they can grow up in a safe and happy home and not be subjected to this.
You can do this.