Here's my experience along these lines...
Last year, our son was born 3 months premature. During the 6 weeks he was in the neonatal intensive care unit, and the following couple of months, my husband was a stranger. I couldn't believe (still can't, really) how distant he was!
It made me Furious!! Here I was, dealing minute-by-minute with all of our child's needs, AND healing myself (I had preeclampsia and HELLP Syndrome, and almost died) and going back to work full-time, and he was acting like an idiot!
Eventually, he snapped out of it. Threats of divorce helped.
Now, he has an evening shift job, so we didn't have to use daycare, and he's totally in love with his son.
I don't know that it is the same thing with your dh, but mine, I know, was scared and trying not to let reality sink in ... I think men just have a totally different way of looking at issues like "NEW BABY IS TAKING OVER MY LIFE".
Even though, at the heart of it, they are just as happy, I know that mine just couldn't process all of the changes that were happening so quickly!
(sometimes he acts like that with the adoption, but not as bad. I think he knows better this time around!
)
Good luck, and try to be patient. I'm sure he will be supportive of you and the child, but in his own time. It is just frustrating as H-E-double-hockeysticks for the wife!
Take care!
Sharel