When Sunny was about a year, just before he went into brumation, he was eating far more veggies and fruit than he was eating superworms or crickets. After coming out of brumation, he is passing up all the greens for crickets. Maybe he needs the protein. But he will not eat his superworms at all. Only eating crickets. I think their likes and dislikes evolve too. Green peas used to be his favorite, now he won't touch them.
Fussy little stinker.
As long as your beardie is eating his veggies, greens, fruits, etc., like it was stated, they will eat less and less insects.