I think you are thinking of the phrase  the other way around , which does essentially mean the opposite, but in a specific way. The specific nature of the other way around is that it means that doing what you say in the opposite direction is correct, not necessarily the exact opposite.
You can offer your kitten either dry food, canned food, or both. Be sure to choose food which is designed for kittens. They require a diet which is especially rich in protein, calcium, and other nutrients. Cat food that is for adults is not sufficient.
She should be eating a high quailty kitten food, dry and/or canned such as Iams, Science Diet, Nutramax, etc. The kitten food (rather than adult cat food) will give her extra calcium and protein to replace what she loses in her milk.She will be thin by the time the kittens are weaned, this is normal.he should be eating a high quailty kitten food, dry and/or canned such as Iams, Science Diet, Nutramax, etc. The kitten food (rather than adult cat food) will give her extra calcium and protein to replace what she loses in her milk.