DS is autistic with high energy, he is non verbal but uses cries and gestures to let me know he wants to eat (outside of meal times). Even after having eaten an adult portion he then stares at DDs plate and takes food from her (she is only 2 so doesn't particularly fight back). His weight is normal for his age, he is quite tall as well. Is it normal that he requires an adult portion for every meal, plus snacks? He also seems to think that if anyone else in the room is eating something, that it's meant for him and he'll go over to eat it.