If you get the temps and UV right, their appetites tend to improve. It's still no guarantee that they will eat much in the way of greens, though. Mine will eat them, but prefers live food.
Any of the supplement regimes will be OK, as long as you have a really good UV light and you give vitamins regularly. The balanced supplements are designed to be used very sparingly, every day. Most people don't do this, though. I'm not sure where the complicated feeding regimes a lot of people follow came from, but there's no need for them. However, no great harm will come to your beardie if he doesn't get the exact amounts of vitamins that are ideal - as loads of people have found out.
Draco dormiens nunquam titillandus
“... there is no shame in not knowing. The problem arises when irrational thought and attendant behavior fill the vacuum left by ignorance.”