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.
Kittens less than one week old need to be fed six times a day. That's every four hours, day and night. After they reach two weeks, the routine can be reduced to four meals a day, or every six hours. Use either a syringe or a kitten feeding bottle. Ask your veterinarian to show you how to feed your kittens.