You dont have to wait for him to eat silks and waxworms.
just feed all foods in moderation.
silks are a great staple feeder.
you can try smallpetfeeders.com
they have lots of different bugs, as does reptilefood.com and mulberryfarms.com
i just purchased orange head roaches, discoid roaches, bean beetles (great small food for small chams), silk worms, hornworms, and soon banana roaches.
and of course crickets.