Growth spurt in babies.
When Lucas goes through a growth spurt, it affects both his sleeping and feeding. He does both more. He'll eat maybe one or two more times than usual and he'll take more naps than usual. He could go from 5 feedings to 6 or 7; and 3 naps to 4 or 5 naps. That or he'll sleep longer instead of more often. He sleeps about an hour at time, but growing, he'll sleep well over an hour. :)