I agree with you, when I got mine at 3-4" I fed it strictly live that I would quarantine and fatten up with pellets and I'd feed them pellets right before putting them in as well, don't know if I'm correct but it was like stuffing shrimp with pellets, figured she'd get the nutrients from the pellets as well.. she grew probably 1.5"-2" a month till 8" where she slowed down to more like 1" a month and then when she hit ten inches she got thicker and growth has slowed to very little she's probably about 1' now.
I've heard similar stories with raising the chinese yellow cheek.