Hi:
I feed my pair of percs once a day, sometimes every other day if things get real busy. My clowns are like dogs - they "beg" at the glass whenever I walk by. If I fed them on thier schedule, the tank would be a swamp.
I think you would want to consider what else is going on in the tank before you feed much more than once a day. If it's a reef and you are trying to control nutrients, that's a consideration. If it's fish only, you may have more room to experiment.