I can only speak for myself, but I feed all my fish the same way.
I do feed them 2-3 times per day, but I stand/sit there and drop it in piece by piece s-l-o-w-l-y until somebody misses something they could have easily gotten. Then I think they've had enough.
Fish in quarantine are stressed, and introduction to a new environment (even one as special as the reef tank I have created) is also stressful. So I use quarantine as a time to build them up as healthily as possible. To that end I may offer food even 4-5 times per day but in only one or two bites at a time.
You know yourself best. If you cannot help but overfeed and consistently find food on the bottom or haven't the time to feed this way then maybe my method is not best for you, and a simple once a day might be best.
My marine q-tank fish get Formulas 1&2, Prime Reef, frozen mysis, minced frozen silversides/squid/shrimp etc from the grocer, live (gutloaded) brine shrimp, nori sheets, broccoli, live blackworms- and anything else I might have in my hand that I think they will eat. I try never to feed the same foods two days in a row.
I also vacuum my barebottomed q-tank everyday and change a small portion of the water.