Welcome to FF, LJ. =)

I've had my pacmans for a little less than a month and they do not recognize the crawlers as food right away. I had to wiggle and tease the front of each frog's mouth holding crawler bits in tongs until they had a go. My C. cranwelli took to it well, but is still learning tongs = food. My fantasy takes more persistence. I picked up this tactic after watching some YouTube how-to's from Ivory Reptiles. =)

These frogs generally have a good appetite, but if he's not eating after you've teased him for two minutes, I'd leave him to settle in or wait for a bowel movement. Someone more experienced can give better advice on whether he's too stressed to eat and how long to wait.