Tzigone, when I thought about it for a story I was considering, I set the age of the baby in "Family Hour" at 12 weeks. I didn't see anything in his behavior or size that would contradict that, and it was useful for my story line, so I picked that age: 3 months old, give or take a week, although I think 4 months old could also be likely. To me, both 2 months and 5 months seemed too far out of the norm, so I'm definitely inclined to go with 3-4 months.
