Adjustment to having a newborn

I have a 17 day old baby girl whom I love with all my heart. She’s my rainbow baby after three losses. I’m 40 and a first time mom. I’m finding the adjustment pretty hard. My husband and I have been married 6 years and love eachother very much. We are on edge and he isn’t getting much sleep. Neither am I but I can handle it. I’m the only who gets up in the middle of the night but he stays up w her until 3:30 am while I sleep and then I take the middle of the night to morning shift. Both he and I are very independent and we are used to doing and going as we please. So things have changed and I am fully aware of it and am not complaining but he seems to be having a harder time with it then me. He’s a ln avid golf player and used to play everyday. Well he can’t do it everyday anymore. I told him he can play twice a week if he needs to. Even tho I need his help. I know that if you don’t nurture yourself and your own needs too what good of a parent are you? Can anyone with a newborn tell me how they’re life changed and what you did to cope? Like I said I love her with all my heart and wouldn’t change it for the world it’s just a big adjustment and I miss when my hubby and I didn’t constantly argue. I hope things get easier.