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.
Once kittens reach 4 weeks of age, their mother usually begins to wean them off milk and onto solid foods. Because the weaning process can take up to six weeks, purchase a small amount of kitten milk replacement formula and mix it into your kitten's food during his first two weeks with you.
Kitten Feeding Schedule. From 4 to 5 weeks: Feed four to five times a day. Total Formula required per day. As a guide, a kitten should drink about 8cc's of formula per ounce of body weight per day. For example, a kitten that is only one or two days old, will need 24cc divided into 8 feedings, which is 3cc per feed.