If the previous milk still remains, you can mixed it with MORINAGA Chil Kid for transition: - Day 1 = 1 teaspoon of MORINAGA Chil Kid + 4 teaspoons of the remaining milk- Day 2 = 2 teaspoons of MORINAGA Chil Kid + 3 teaspoons of the remaining milk- Day 3 = 3 teaspoons of MORINAGA Chil Kid + 2 teaspoons of the remaining milkAnd so on until they have fully moved to MORINAGA Chil Kid. Or adjust it according to how fast the children can accept the milk