That's good!! It's progress!! Mine started out the exact same way . Just keep offering different options. Mine would only eat flake...then it segued him into other foods like mysis and nori.Yes, still alive, added to the tank Friday night, now Wed night.
I have not seen him eat anything, BUT He is lunging for food: Mysis and Formula One, buy I haven't seen him eat any.
Even turning off the pumps and trying direct feeding. He only leaves about an inch from his hole.
Photos from tonight: With Flash and then without flash.