I have such clear memories of people trying to tell me "the more they sleep they more they sleep, just get that child to nap more and they will sleep better at night". Um, NO! Our middle child (who has actually tested higher than #1 so far) did sleep better at night with more day sleep than #1 or #3, and she was just generally easier to get to sleep. But she has no sensory issues or other issues and she still slept about 2-3 hrs less per 24hrs than my friend's kids.