Hi @tsc - I'm sorry about your husband's diagnosis. My husband was diagnosed with vascular dementia and Alzheimer's in 2015. As he has declined, his sleep patterns have definitely changed. At this point, he sleeps about 12 hours a night - usually going to bed between 7:30pm and 8 then waking up about 8am or so. His neurologist told me that when the brain isn't working well, it becomes so tiring to process all the activities of life that the person just naturally needs more sleep. That kind of echoes what @IndianaScott said. I accept it and actually appreciate it since it gives me some downtime at the end of the day before I go to bed. Interestingly, my husband never naps - he just sleeps long nights. If it helps any, almost everyone in my support group has dealt with some kind of change in sleep. Best of luck. Let me know if I can elaborate on anything that might help.