I am keeping my little cousin for the week while his parents are on vacation. He is four years old almost five and has his hands in his mouth the whole time he is awake. I was wondering if there was anyway I could work with him on this while mama is away. They say he is just behind but I personally think there might be more to it. He doesn't speak, eye contact is very rare, and he sits/rocks while flapping his hands a lot. This is all very new to me and I only have him 5 more days. But I if anyone has dealt with this and has any suggestions I could try I would love to try.