Pumping

Does anyone have any insight on how to get my milk supply up because im currently supplementing with an oz of formula after 50% of the times shes breastfeeding if she acts hungry. I tried power pumping for 4-5 days straight around 8 pm. and 3 of the first days i also power pumped around 9am as well I never would get more than 1 1/2 oz for the morning pump and 2 oz for the night time pump. My little one is about to be 6 weeks. Also i drink body armors a couple times a week, water daily(i should drink more), pink drinks probably every other day. Im running out of ideas someone please help me