Re: erratic feeding
After 6 weeks, you can let the baby sleep provided he is gaining adequately and producing the right number of wet diapers (poop often slows down to once a week or so after 6 weeks).
This sort of feeding pattern could make your supply decrease somewhat during those nap intervals. But don't worry: as long as you feed on demand your baby should have no problem boosting it back up if he reverts to nursing every 2 hours.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"