Beardies not eatin by himself?

rite hi, heres the deal. we first gt out beardies, for they wer boy n girl, turns out both boys, one of them becomes dominent, the other one didnt eat. saved uo lots of cash about a month l8a bought another viv bcz they desrve wat they need. now heres the part wer im stuped! hand fed the lizard as he didnt eat by himself anymore, and i was worried, then fed the left overs to the other dragon hu ate by himself but then got lazy and also didnt want to eat by himself. so yesterday i fort ive had enough slavin over ur mr dragons, nows the time to eat your selfs, so ive left about 5 crickets in there since yesterday, they havent eaten them, i also leave a tomato for the crickets to eat so they dont nibble the dragons. Im gettin worried bcz they havent eaten yet, does anybody now how long they will wait til they eat them selves, also they wer hand fed for about 4 mounthss. with going on holiday and what not i want them to eat by themselves wen they get lookd after by my friends. any body hav any advice. i dont want them to starve help thank soo soo soo much pplz :)