He spends all of his time in a downstairs family room. He can still get himself to the bathroom and come upstairs during the day to eat or drink something. That is about all he can do. But at night he just calls for something to eat or drink or even to just cover him up with a blanket. He won't stay on a routine. Seems to sleep only a few hours at a time in a 24 hr period , but not through the night. Sometimes sleeps long stretches during the day. Because of his dementia, I do not want to give him any sleep aids. Any suggestions for someone who doesn't sleep at night.