Sangogo, Congratuation on your new coral, but I think you should be more experience on these Sun coral. Anyways, I think you can do a very good job feeding it, all you need to do is feeding it every other day with 2 cubes minimum to 3.
Well, it's kind of funny how you bought your SC and didn't really sure off it. That's a big mistake because what if you would bought the wrong coral or you know... Always prepare before buying a coral. Must have lot's of research before purchasing it.
I myself knew the constant feeding with this coral and it's really hard to take care of it. Though it isn't, just feed it, keep your parameter at corrective level and you be fine.
Heres what I think you should do with your SC. You should try some Mysis Shrimp with cyclop-eeze. First thaw the cube of food and pour the juice of the mysis in the tank, not meat. Wait 15minutes and shut off your pumps. Wait for another 15minute and they should be open. Use a turkey baster, or what every can shoot food directly to the polyps. Make sure you feed every polyps because each of them are individual, they are not together. ONE MORE THING, have a feeding schedule, that's when you train them to open up. Soon give them about few feeding time, they will get into the schedule and feed.
Let us know how your SC doing and I'm willing to help.