Drink water ,oatmeal, you can make cookies too good recipies for production of milk are online, drink mother's milk tea,fenurgreek supplements help too. Mainly a nutrient rich diet and staying properly hydrated are the key things.
I hear that eating oatmeal and drinking lots of water and milk as well
And also make sure or baby is latching on at least every two hours the babies saliva and sucking on your boob lets your body to produce more milk
Water, cookies , oatmeal , garlic, carrots, fennel, nuts (raw, almonds cashews, peanuts etc.) Green papaya, seaseme seeds, & ginger.
Try and Google what power pumping is. Also there's recipes for lactation cookies. I've also heard that mother's milk tea helps as well as staying hydrated. Don't give up mama!