It is a difficult balance as baby snakes can over feed in some cases to the point of gross obesity.
I remember two autopsies we did on California kings which had grown magnificently up to 2.5 ft and then died mysteriously. In both cases we found that the heart and other organs had litterally been out grown by the rest of the body causing heart failure when it could not keep up. Some others just got fat to the point where the heart was compressed.
Some snakes do not know when to stop eating.
(It is similar to the situation in some desert snakes that instinctively "tank up" on water in captivity, as where they are in nature drinks are few and small. They just don't have the instinct to stop drinking. This can be lethal in species whose metabolisms are designed to survive on little or no free water (what fluids they need comes from prey animals).
I have a very healthy Mojave Sidewinder for example that I have had for 4 years, that has never drank water (lives on sand in AC so it's super dry). The only Sidewinder I ever lost had a water bowl. This I should point out is not carved in stone as I have met people who have raised these snakes with waterbowls successfully. Go Figure...)
Baby snakes eat whatever they can find in nature not just because they need to grow quickly, but also because in nature meals can be few and far between. They also burn off more calories in their quest for meals (in active hunting species vs ambush predators) then one sitting in a ten gallon aquarium waiting for it's meal to be dropped.
Feeding on a less than two week schedule is also very bad for species like for example Eyelash vipers, Wags, Sidewinders, C. cerestes and some western ratsnakes like B. rosalie, triaspis and Subocularis.
In the case of the ratsnakes over feeding can result in the snake going into a pattern of eating and purging not unlike an Aenorexic-with lethal results. Again I have had deaths in Trans Pecos Rats that clearly (through Autopsy showed excessive fat on a two week feeding schedule.
The old truths about diet and excersize count in the snake world as surely as in ours.
Frank
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"The luxury of not getting involved departed with the last lifeboat Skipper..."