Let me start by saying that I tried to stay away from this thread because most people don't like my advice but your dragons need help. I may say harsh things, its not to be mean or put anyone down. I lost my first dragon at 2 years of age due to insect heavy diet. It could have be prevented if someone would have told me about dragon "tough love".
Most dragons that don't eat greens either do not recognize them as food due to not being introduced to them early enough (I mostly blame breeders for this) or they prefer the taste of insects which is understandable. Who doesn't prefer to eat tasty food over boring food? Regardless of the reasons, we need to do what is in their best interest which means getting them to eat a healthy diet.
Their is no trick, topping or magic additive that will get a dragon to eat their greens consistently. Plain and simple, hunger is what they need to get them to eat what they don't want.
A healthy adult won't stave themselves to death. Stop feeding insects and offer greens daily, some dragons have been known to not eat for over 2 weeks but eventually they do. You aren't starving them or being mean, they are the ones deciding not to eat. Make sure they drink during this time and try handfeeding the greens to encourage them to try. Weigh every 2-3 days, a little weight loss will be ok but if they start to loss too much, go ahead and offer a few insects once a week.
For babies, instead of stuffing them with insects first thing, just give a light meal of insects then offer soft, bland greens like endive or romain. I find babies don't care for tougher, bitter greens. Make sure to chop everything pretty fine. try handfeeding or putting small worm in the greens, this will at least encourage them to go to the bowl and maybe accidentally eat some along with the bugs.
The practice of stuffing out dragons with as much as they want twice a day is wrong. I know its common practice and has been the standard for years but so has picky non green eating dragons. We are killing our pets with love and the crazy idea that we need to get them to grow big and fast. Having a big fat dragon isn't healthy, growing them slower is much better for them.
Babying them with constant handfeeding or baby food also doesn't do them any good. Baby food or pureed foods should only be used in emergencies when a dragon is ill. Catering to them like they are delicate little divas does them no good. If you have a dragon that won't eat anything, not even its favorite food, it needs to see a vet.
Reptiles are made to go without food during hard times. Unless they are loosing weight, don't force feed, ever.
EDIT: I think the natural foraging behavior is part of the reason they get addicted to insects. In the wild, finding protein is a hit or miss so instinct tells them to eat insects when ever they can, as much as they can.
Of course they aren't getting insects every day so they eat greens instead. In captivity, they learn that insects are coming everyday so they wait for that instead of eating the greens. Thats why some can be so stubborn about eating greens even if thats all they are offered. They are conditioned to expect insects and they are waiting for that. Sooner or later they will give up waiting and try the greens.
