Ds is 3.9 and has asd. He does not sleep I finally bit the bullet and got some melatonin, only thing is I can not get him to take it. He was OK for the first week, we gave it to him an yogurt for a few days then he refused, then dh tried cutting a bit out of a banana and putting it in there but now he just refuses any food after tea and we are back to square one.