My zebra did not eat for almost 2 months. Now he eats anything meaty.
It was funny... all of a sudden he came out of hiding and started to eat like a pig. Squid, shrimp, octo, krill, mysis, clams, etc. It does not matter. He will even scoop up some pellets if they hold still long enough for him to find them.
He tore apart a crawdad that I gave him for fun. Man, he crushed the shell like it was nothing.
You don't have to baby them. Just drop the food in. If he wants it, he will venture out and find it.