My Dad Has Dementia. He Is 73 Years Old. He

My dad has dementia. He is 73 Years old. He is now turning jaundice in the white of his eyes and face. He keeps losing weight, however, he is constantly hungry. He is in a nursing facility, but we feel as though he is not getting the care he needs & deserves. He is a DNR. He is suppose to be moving to a family based facility tomorrow, however, with this new symptom we are worried. As of yesterday he was still trying to talk. As of today all he is doing is sleeping a lot and won't talk. What could this be & do you think he should be checked out by a Doctor ASAP?