I am just curious how much your 15 month understands and how much they follow instructions. My son seems to understand some words like if you say "where are your shoes" He may look at his shoes but he wouldn't go and get them. I have noticed other kids his age doing this and I know they all develop differently but I was just wondering if he seems a bit delayed. He points to thinks he finds interesting and is starting to understand "where" questions. He isn't really saying any words yet apart from "dada" and it sounds like he's saying thank you as he says it whenever you give him something but he also says it randomly also. He used to say other words like bird, ta but hasn't said those for a while. I'm just wondering if he could be a bit delayed with his language?