Sleeping like a champ

Andrew appears to be our champion sleeper. He can sleep through just about any racket his brother can create (with pots and pans at his disposal, he can make a lot of noise) and even slept through a mariachi band. He's starting to do longer stretches at night, and will do a 4 - 6.5 hr stretch each night. A week ago he slept from 12am - 6:30am for the first time and I woke up more energized than I had been in a long time. I'm hoping this trend continues...