Increase Breastmilk Supply

Hello Mummies, Can anyone share an effective way to boost up breastmilk supply ? Been pumping every 6 hours for past couple of weeks since delivery of my baby and managed to pump 60ml - 80ml. Tried to pump every 3-4 hours but not much milk will be produced. Only a few drops. Feeling rather affected over this as I really want to BF my baby fully. Currently alternating FM and BF.