The best advice I was given is to let DH figure it out. Even if it means you going out for a couple of hours everyday and letting them get to know each other without you around. My DS was BF and always prefered me as he could smell the milk. We found daddy doing things like bath or something else special works. Also remeber that in time it will pass. My DS who has always been my boy now prefers daddy time. it is so important to talk about it with your DH though so it does not become an issue