My OH has, in last 6 weeks had an even worse sleep pattern than previously as, not only being unable to sleep after just 5 hours of nighttime sleep but during rest of the day constantly falls asleep and in some awkward and uncomfortable positions in her armchair. Upon waking she is disoriented and confused but knows that she is sleeping all the time but just can’t stop herself. Sleep can come on so suddenly from being wide awake to snoring in seconds. Alzheimer’s progression or something else? Anyone else come across it as severely?