" Thanks all for responding, I see what everyone is saying. I do believe God is working on him, us.... "
That's all well and good but does he have a Therapist working on him? A person CAN change but, only if they want to and are willing to put a lot of WORK and effort into changing. It doesn't sound like your husband is interested in changing. In fact, it seems like he is getting worse. He is spending LESS time with his child and wanting to lower C/S since your pregnancy. He is not acting like a Father or even a MAN. He is behaving like a 4 year old who got a new puppy and neglects the older dog for the new and exciting. If he can't manage to be a good parent to one, he isn't good parent material. PERIOD. You may think the marriage makes a difference but it really doesn't. A man-child who can't commit to raising HIS child, does not have the capacity to TRULY commit to a marrige. Deep down, he doesn't take either too seriously. When he finds something new and shiny to distract him, you and your child will be in his Ex's shoes. ( Except, since he is already paying support on #1, you will be getting pennies on the dollar of what he is currently paying because you chose to have offspring #2 with this man. )
God is wonderful but a marriage takes TRUE commitment and hard work on the part of BOTH partners. You can believe and want all you want, but with out work and commitment a marriage can't work. Your husband is not wired to commit and without a whole lot of help and work he will never be.