Full little tummy

Aidan had his first taste of rice cereal today. When I've read about rice cereal in books I always pictured something similar to Rice Krispies. I now realize that's a bit silly. It's really much more like oatmeal.
Anyway, Aidan seemed to enjoy it. He spit some of it out, but some of it he seemed to swallow. He even seemed to be "chewing" it, or moving it around with his tongue after getting a spoonful. I tried to breastfeed him a little bit afterwards, and he didn't seem interested. I wonder if that's becuase he was full or becuase I thought he was full and didn't try very hard to keep him eating. I guess we'll find out if he wakes up soon needing to eat!
Although we fed him in the evening tonight, I think I might switch it to the afternoon. He sleeps pretty much through the night already, so we don't need to fill his little tummy any more. However, I would like him to go longer in between afternoon feedings becuase I'll be at work soon. Then he won't have to have as much formula.