Ignore "conventional wisdom".
: If your little guy is eating and happy, and is of average weight, it sounds like you (and he) are doing just fine.
I know it is hard sometimes to ignore the "experts", but in reality YOU are the true expert in handling the needs of your child
NOW, that said, if you are feeling like he eats too often and YOU would like meals spaced out, then that is an entirely different subject and one that you need to work out for you and your family
editted to add: To the original question, I honestly don't remember how often my kids ate at that age. DS#1 was home with me, nursing and eating solids at that age and ever two hours between nursing and "meals" doesn't sound that out of wack. DS#2 was in daycare and so was eating, between bottles, "snacks", and lunch probably about every 2-3 hours. I have always tried to feed "on demand", even solids. Little bodies work a lot and burn a lot of energy/calories, yet have very small stomachs, so I say feed him when he is hungary...if that is every two hours, so be it