MIL is now living in her own home with 24 hour live in care. She sleeps very well at night 11/12 hours uninterrupted. During the day she is very sleepy. If left in the room on her own for more than 5 mins she will fall asleep. Her carer tries to keep her awake allowing her a 2 hour nap during the day. Is this "normal" ie another stage/ step along the dementia road. She suffers from Mixed Alzheimers/vascular and has deteriorated rapidly over the last 12 months.