My baby just saw PD this morning due to constant whining and slow weight gain. PD said she may not have enough milk intake and suggested taking 1 time formula in the morning cereal or drinking separately as add on. I am not sure if I should do so as I would still like to total breast feed my daughter. Struggling to decide. If do so, which brand is good not to cause constipation, Mamil Gold, Enfa or Similac? Sigh.