Daily is good if you have the time, but as they grow older (or even at a young age) it's not necessary. I try to change my adults food every second day. It's also not necessary to feed him insects, but if he eats it, it is a nice enrichment. Mine never takes mealworms and only occasionally eats crickets.
Cresties are really cool and underrated. I'm glad to see they're getting more popular these days.