Have you tried talking to him about what he thinks families should be like? Alex was fantastic with Skye up until he found out that his daddy is having another baby: at that point, sibling rivalry hit with a vengeance (to be precise, it hit his brother, the furniture, and everything else imaginable.) It turns out that he thinks he should be part of a typical nuclear family with 2 children, 2 parents (he can handle them being divorced, or even the stepparents) but the idea of being part of a blended family with 5 children in total just got a bit overwhelming for him.
I have no idea how he's going to respond to the idea that we might want a few more babies...
I have no idea how he's going to respond to the idea that we might want a few more babies...