Juno, we are going through the same thing
My Dh spends alot of time with W, but he leaves in the morning before W wakes, and as soon as W wakes he is looking for his dad and he will cry and scream for a while, but he does get over it after a few 10 minutes or so. I used to phone DH in the morning, but I have stopped that, W cries so hard he shakes and he can not talk to his dad properly.
If it is weekend he spends every minute with his dad, if his dad is going somewhere, he must go with.
Dh must bath him, Dh must dress him, Dh must feed him it is driving us up the walls.
But then I must add, some days, once or twice a week he will let me do some things for him.
W will be 3 in Aug, and we are expecting no 2, so I think that has also something do with it.
I also need help - do not know what to do