First of all, don't ask, tell him what you need from him. You're a family now and he's got to take responsibility. My hunch is, he won't. His behaviour shows you who he really is.
Take note- and I speak from experience- who he is when you've given birth is who he is across the board. We excuse this utter, utter selfishness as, "Well, he needs time to adjust to this big life-changing event. He works hard! Babies aren't easy!" Yeah. We all need time to adjust to doing something we've never done before in our lives- ESPECIALLY the mother. It's one thing to cut a new dad slack. I think that is important. New mums and dads need a lot of tenderness and patience because that first baby is such a novel life event and it doesn't come with a manual. But don't cut slack for downright selfishness.
He has made absolutely no effort to prepare for the birth (and the rest!). He hasn't prioritised his family at all.
My ex husband was like this. And I suddenly saw who I really married. I saw that I was of little importance. You've given birth and he's off making macrame owl hangings or whatever, while you're home alone, doing it all. His mentality is, "She wanted the baby. She's got the baby. I'll leave her to it. She's a happy bunny. I've done my bit." That's really what it boils down to.
Tell him what is role is here. Sad that we often have to do this, but it's so commonplace. I just hope he steps up.
Apart from totally slating your husband... 😬
Congratulations on your new baby. Take ALL the support you can get.