you def do need to feed it a lot, but none the less, search for the article i mentioned above. almost all, even with feedings still end up dieing in a few months from lack of starvation. im not saying it isnt possible to keep one longterm, but you dont have a good chance. having a DSB, refugium, or better yet, a miracle mud filter will help because it will produce a lot more invertebrate larva. although if you have a refugium or mud filter, the best thign to do is to keep it IN there... the difficulty of these animals has nothign to do with how much, how often, or how regular you feed.
the best combination of foods that i know if is dosing some DTs phytoplankton and also DTs oyster eggs.