Baby lizards should eat as much as they can in 15 min, at minimum 2 times a day. Variety is important in their diet. Calcium enriched food + good lightning will keep your lizard growing big and strong.
I use Mulberry Farm for worms: they have many different ones to use including silk worms you can grow on your own (Their adult stock is always sold out), which are one the best nutrition wise. Black soldier fly larvae is small and great in calcium and protein and hornworms hydrates as well as high in calcium (They currently have a buy 2 pods get 1 free pod sale for hornworms. Great deal. You can freeze them/kill them at a size you want because they grow very fast at 80F temp). Roaches are wonderful too but Mulberry does not sell them and depending on your state, certain types are not allowed (ie Dubias are not allowed into FL). Roaches are more expensive, but not as pricey as silks, so it all depends on your budget. Add some small superworms in his diet too. They have less chitin at that size and more meat than mealworms. They are about the same size as mealies.
All crickets, unless they are pins, should be removed after 15 min. If they have a mouth and nothing to eat, they will nip at your lizard.