I would just like to say, I don't miss having crickets in the house. Its hard to say how much to really feed a leo Manda. So I personally think your fine. Just keep using common sense. If he was underweight, you could try to introduce him to supers too. One of my females, my bell albino, is a really picky eater. She only likes soft bodied larvae. Mostly silks & waxworms. She'll occasionally take some butters. But she LOVES silkworms, which, for anyone unfamiliar, its a hard feeder to manage, at least feeding primarily to one gecko. So, over two months after laying her last egg, she is just getting back over 55 grams, and I feed her whenever I can get her to eat. The other two eat supers like nothing and are fat & happy. You gotta work with what you've got.
He is looking great though! I'm glad he's doing well. 
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