My triplet (2B+1G, the girl is the youngest) were born on June 2009. They are now taking Nestle NAN 2. Poo poo frequency is ok (per 1-2 days). They started to take NAN 1 when they were in QEH New Born Intensive Care Unit. They also have partial bf in the first 5 months. They are now about 11 months and weight from 17.3-19 pounds. I think they may be underweight but the pediatrician said its acceptable. I am thinking about the need to change another milk brand after 1 years old.