I am a BIG, HUGE overfeeder. LOL
I tend to feed some tiny pellets early in the day and at 6pm they get frozen food. I also do massive water changes due to my horrible overfeeding. I do abput 60g on my 180g, so it works out. i still battle nitrates though.
Normally, you can feed once a day and be fine as long as you do appropriate changes. I also try not to feed flake very much, that i believe has the most phosphates in it.
I think the majority of ppl actually feed every other day these days adn their fish do just fine on that kind of schedule.