I feed mine a squirt of mysis every day or two. Like maybe 12-20 actual individual mysids. I have to feed mysis every day for my CBB since that's the only food he eats and I'd prefer him not to starve. So I take a package of PE mysis, lay it out on a glass cutting board, and slice and dice until the whole thing is in 1cm squares or thereabouts. I then take one of these 1cm cubes and that's the daily mysis allotment for all my tanks, with about half reserved for the CBB (he knows that when I come with the turkey baster that I've got something for him - he has a spot he goes to and waits for me to shoot a couple mysids at a time for him). But yeah, basically, unless I run out the gigantea's get at least one squirt of mysis per day.
I've kind of held the view (in general, not just with these things) that smaller feedings more often is probably mimics the natural cycle a little better than one generous feeding less often. YMMV of course
