A happy baby is a baby who knows there are rules. This is one of the great ironies of becoming a parent and it takes a while to figure out: Although babies bring chaos into your life, they don't actually like chaos. Even though they make a huge mess, they actually prefer a nice tidy world, one in which they can depend on simple routines and reliable outcomes.
The boy eats every two hours. This is wonderful for his growth. He is getting so large he almost fell out of his swing and now instead of picking him up we drag him around like a burlap sack full of bowling balls. The downside of his eating schedule is it makes your head explode to be woken up every two hours.