Milk for Baby

Hi mga momsh. Im going back to work next month. As much as i wanted to pump and pure breastmilk for my baby, i am afraid it will be enough. So magtatanong ako dito if anong magandang milk for my baby. He is 2 months and 5 days old now and weighing 6.4kg. Im choosing between -S26 gold -Similac -Bonna Thanks!