Husband Help

Anyone else’s husband really having a hard time adjusting to dad life? What do you do to help him? My husband is great, always makes food, sometimes cleans the house, has a full time job, but he has said having a baby is so much harder than he thought, and he hasn’t been interested in doing anything social since she’s been born. He even has said if he could go back in time and not have a kid he would. I know he loves our LO, I think he is going through some depression and I am worried about him. What can I do?