4 month old hatchling , 2x per day , big meal of live insects in am , smaller meal of live insects in late afternoon , can start introducing salad and chopped veg after 2nd meal of insects .
I typically move to one meal of live insects per day from about 1 yr old with offering of greens and salad.
Lately I've moved to a meal of live insects every 2nd day for my subadults ( about 18 months old ) and offering greens even if they aren't interested .
My selection of live insects are currently
>> BSF , flies & lavae ( wriggly browns and larger soft bodies lavae )
>> supers ( never more than 3 large lavae in a sitting each dragon , or pupa when I have them )
>> crickets ( med to large ) , for a 4 mth old I'd be offering small ( 1/4 size ) crickets ( very important to gutload the supers and crickets with high qual greens , important to dust the crickets daily (but lightly) with caldium powder.
>> mealworms ( treats , never more than 4 - 6 , my gang prefer the beetles and the lavae )
>> silkworms - I love these as feeders for younger dragons , but having a break from farming silkworms since about March , but highly recommend small ( 1" long silkworms and moths for a smaller hatchling like yours as excellent highly nutritious feeder staples if you are breeding your own silks ) , your little dragon can handle medium ( 2" long silks too , 1 or 2 will big meal ).