My son is 18 months old, he isn’t really saying much yet. We have mama and dada at times. And maybe two other words. He does understand as if he sees a dog he’ll say doggy. IF I say where’s your shoes he can pick them up and give them me, so I know he’s picking up on instructions. I’m doing the dreaded thing of comparing to children I know of similar age. Should I be concerned? We sit with books and I encourage him with names of objects but to no joy of him repeating. He babbles and lot of talks to himself in baby talk but should I be more concerned? People say “oh he’s just lazy, he’ll do it when he’s ready”