I exclusively pump and feed because my baby wouldn't latch. In the beginning pump every 2 hours (mimick babies feeding schedule as if you were breast feeding). Although in personally only pumped twice during the night (once at 12, once at 2) then when my baby got up for the day I did my next one. Drink tons of water, eat oatmeal with almond milk, eat properly in general. You can also try fenugreek pills, mothers milk tea, brewers yeast, or domperidone (which is a prescription drug).