I have one of those and they're 3 as well. It drives me crazy!! I have a 2 year old in my care and they put on their shoes (most times on the wrong feet), and they put on their jacket all on their own, but not the 3 yo. I know he can do it, just refuses to as I'm sure at home Mom & Dad do it for him, so I give him some tough love. There are times when he sits by the front door for up to 20 mins until he decides to take off his own shoes. Eventually he realizes that no one here is going to do it for him, so he takes them off and joins us.