how much lactogen 1 should be given to 4month infant.... he take mothers milk also

A. When Mother’s milk is sufficient for the child why do you want to start with lactation that is not something I am understanding what if you have an issue and that is why you want to start with it then start giving 30 to 60 ML at one point of time and gradually go up to 90 to 120 ML over the period only if your child demands for it