How can I produce more breast milk?

C

Does anyone have any tips on how to produce more breast milk? I’m only getting 3oz on each side per pumping session and I feel like I should be pumping more... However I’ve only been pumping twice a day. I know I should be pumping more often but I’m only 6 days PP so I’m still adjusting to everything! I’m not sure how often I should be pumping..I feel like such an amateur at breast feeding! All the tips I could get would be greatly appreciated!!

Also: How much coffee is a safe amount for breast feeding? I’ve been having only 1 every morning but I’m craving more throughout the day!