Alice,
Not really the extra feeding, but going out of the way to find the food at first. You will need to be able to supply the BSE with a variety of fresh seafood (ie, tuna, squid, shrimp, etc...) Something so that he will just start eating.... These also need to be injected into the substrate. Once you get him eating those you will have to slowly work over to frozen food (ie, krill and mussles.) If you come across a small one like mine then you have to cut them up into tiny peices. Everything must be injected into the sand. I've heard if you have aggressive fish they will nip at the tail of the BSE... Sometimes he leaves it dangling out.