My DS is almost 5 mo old and I have noticed that in the past week, he has not pooed not nearly as often as he used to. I feel like before, it was a poopy diaper at least every other time. These days, it's maybe once a day or maybe 2 small poos a day. He is not on solids yet. Is this normal- a developmental thing? Or could he be constipated? he is not really showing any unusual signs of discomfort or fussiness. (except his night wakings have gotten worse- but i think that is a sleep issue.)