OP,
I'm so sorry you are having this time spoiled for you.
But I think you are being very passive by allowing this.
Hand the baby over and walk away for a break. Insist.
He doesn't get to 'help' with his child.
There are so many depressing threads like this on MN and yet the women end up with 4 children🙄.
If my husband behaved like this with DS1, he would have been an only child.
Stop being passive.
Spell it out to him clearly and loudly.
Also tell family and friends you are struggling doing it all on your own.
PND is so easy to get through lack of sleep and feeling abandoned and uncared for.
My husband couldn't breast feed but bloody hell he did all the cooking, house work, laundry, tea, snacks you name it.
Do not kid yourselves that they cannot see how exhausting and hard it is.
They can see but they choose to conveniently look the other way because that suits them best.
They are men that are quite prepared to put themselves ahead of you.
This is who they are.
They may care a bit about you and the baby, but in no way more important than they are.
They will do as little as they can get away with.
A 3 hour zoom call is beyond selfish having been out at work and a new baby in the house.
Unbelievably selfish.
Making excuses for him does you no favours.
You need to tell him that he needs to step up.
Please think about reaching out for support.
You need to protect yourself and your baby from his selfishness.
You need to stay well.

If he won't care for you, do you have family who will?