Some of mine eat more than others. The ones that eat more get bigger quicker. Just because a snake doesn't eat every time you throw some food in his face doesn't mean it's not a solid snake. I don't expect my males to be at breeding size in four months and females in Fifteen. To say that a snake who doesn't eat every week is a poor feeder and shouldn't be in a breeding program is a matter of opinion, but I happen to disagree.
I like to let them grow at their own pace.