"Are you sleepy?" is asking if the person currently feels tired and in need of sleep. "Do you want to sleep?" is asking if the person desires to go to sleep at that moment. The first question is about the person's current state of being, while the second question is about their desire or preference.
"Are you sleepy?" is asking if the person currently feels tired and in need of sleep. "Do you want to sleep?" is asking if the person desires to go to sleep at that moment. The first question is about the person's current state of being, while the second question is about their desire or preference.