Change milk gradually, by adding a bottle of HiQ step 2 and spend it for 3 days then add the another bottle of HiQ step 2 and spend the same day. When add a new bottle of HiQ step 2, reduce a bottle of HiQ step 1 until no HiQ step 1. Such as feeding baby for 3 bottles of HiQ step 1
The 1st – 3rd day ; add a bottle of HiQ step 2 at noon and 3 bottles HiQ step 1
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The 4th -6th day; add 2 bottles of HiQ step 2 at noon and 2 bottles HiQ step 1
the 7th ; change at all to be HIQ step 2