Cute axie. You can try putting him in the fridge, that usually helps them pass whatever they've eaten. When I feed my axolotls blood worms, I usually take a Tupperware and scoop them from their tank and feed them in that Tupperware, then return them. I don't like having bloodworms all over the tank, ha. But then again, my axolotls don't even eat bloodworms because they like moving food, so they get worms instead. Maybe someone can offer a better solution.