Dave is having happy days inspite of how badly he is doing physically. He can not speak so we ask yes and no questions. My daughter and I are with him all day and he just loves the attention and can even give us a very slight smile and moan of joy. The problem is in the nights. His moaning has escalated to all night long and the sound is awful as though he is in serious pain. He can't answer me as to what he needs and my heart breaks. He seems to be indicating that he has no pain but I am never sure. Any thoughts?