Hi my baby is 3 month old, he was born at 36 weeks and weighed 2.2 kg at birth. Now at 3 months his weight is 5 kg,. He is both breastfed and formula fed. Since my supply is not much, usually pump out about 2 full feeds in 5 to 6 pumping sessions, please suggest how to enhance the supply. Also he feeds every 3 to 4 hours and about 120 ml each time, is this quantity sufficient for him?