Make sure your kitten does not get dehydrated. The easiest way to check how hydrated your kitten is, is to grasp the skin firmly but gently between the kitten’s shoulder blades, and lift it straight up with a twisting motion as you release it. Kitten skin that is well hydrated pops back within a second or less.
The longer it takes the skin to return to its place, the more fluids your kitten needs. In severely dehydrated kittens, the shelter manager may decide to inject water or electrolyte solution under the kitten’s skin, for faster absorption.