until your axolotl is fully grown he/she ideally needs feeding daily, also one block of bloodworm is quite a small amount of food (unless your axolotl is still quite small).
other foods are worms ie.. earthworm, wrigglers etc.. most can be got from bait stores, fish ie.. platy, guppy, moly etc.. these can be got from pet shops, always observe 30 day quarantine, shrimp ie.. river, ghost, cherry etc.. these can be brought online or pet shops, always observe 30 day quarantine, frozen food.. these can be a variety of meat based food ie.. bloodworm, krill, mysis, brinshrimp, beefheart, chopped cockle/mussel, chopped prawns etc.. these can be got online or pet shops, pellets ie.. axolotl, trout, salmon, carp etc.. these can be brought online, pet shops, bait store etc.. best to make sure they sink and are soft, also some trout, salmon, carp pellets can be quite high in oils so best to observe contents.