We tend to find the best way to raise a crested is with a combination of crickets (dusted with vitamins of course) and CGD. When our girl became an adult she started preferring her CGD straight without any fruit, but for some reason likes it "aged" overnight first. (she's weird that way) Now we only feed crickets as treats a few times a month. I would suggest that at 6 months you could move to only feeding crickets once a week and then CGD the rest of the time. CGD is a complete food you can raise them from babies, to adults, and even breeding females on only CGD, that is what it was designed for. But I have to admit, as some of us here have done in the past, it is too much fun watching them hunt, so a hoppy treat once in a while is fine, but not in any way necessary.
I am jealous that you can get such great pictures, ours is two years and to date we have two clear pictures... and about a hundred blurry ones. But then, our girl has gecko ADD, she can't help it.
Good luck!

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0.1 Albino Leo Gecko
0.1 Crested Gecko
1.0 Dear Boyfriend
Departed: Harvey and Spock