Husband like being a Dad?

Looking to see if other’s may be in the same boat or have some advice. My husband and I tried to have a baby for almost 2 years before I got pregnant. Then when it happened we were so excited. Baby is now almost 4 months old and I feel like my husband doesn’t enjoy being a dad. He doesn’t take initiative to play with him or take care of him in anyway. I find it odd. I’ve asked him to change his diaper and he has argued with me about it!? When I try to talk to him about the issue he gets SUPER defensive. I asked him why he doesn’t want to be with him when he gets home from work so now he’ll pick him up, but he’ll sit with his phone in his face the whole time. His first Father’s Day he chose to go golfing, he changes maybe 2 or 3 diapers a week, only watches me bathe him, and will ask for help if I encourage him to do anything independently with baby. It’s really making me look at him differently. He views caring for the baby as work and I see it as just part of life and I genuinely enjoy it. Do I give him time or do something? We are so blessed with a happy and wonderful baby, why can’t he see that?