How long have you had him for? If its not long, he may need time to adjust. Don't stress out too much if you just got him and he won't eat. If someone else had him before you, they might not have fed it babyfood. Be careful leaving babyfood in there too long as it goes bad quickly.
Cresties can be different, some of mine refuse food from a dish or won't even eat any babyfood at all. Some get spoonfed (hatchlings), some scarf down food from a dish like a dog, and some just won't touch it period.
Try adding insects (crickets) to the cage at night just before the lights go out if he won't go for the babyfood.
Good luck
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