the reality of having a baby is very different from the excitement of TTC and the birth.
some men don;t 'get' it, until the baby is a little older, and can smile, or coo or respond in some way
some men feel pushed out if you are breastfeeding
try not to force it, he will come round to things or not, but it is early days and very scary/ exciting/ not what you expected for both of you
DH felt very much as though DD were my baby,not his this time round, as after i had DS by em c.s, he had to be there and do stuff as i was morphined up to the eyeballs and couldn;t get out of bed. whereas with DD, i had a vb and was out of bed feeding her and doing things 2 hours after birth.
your hormones are going bonkers right now, so try not to get too far head of yourself in t terms of splitting up etc