I'm pretty sure 2 hourly feeds during the day are just fine if you are breastfeeding. I don't think it's possible for them to "over feed" (my son will just sick it up if he has too much anyway).

I've heard that the 4 hourly feeding that people talk about is actually what they should be having if they are on formula which is a whole different ball game.

We are having 2 hourly feeds all day and 5-6 hours at night so it sounds similar.

PS You'll feel less sore in a few days (I've just finally stopped wincing in pain at each feed).