Why do you ladies think this could be? I've been pumping between feedings so i can increase my supply for 2 months now. I started being able to pump 1/4 of an ounce from BOTH breasts for one day (average of 4-5 pumping sessions) then it increased to 3 ounces PER breast for one day (still average of 4-5 pumping sessions a day). I also use an SNS to help with milk flow and production. Lately, my left breast doesnt produce as much as the right one... i get only 1.5 to 2 oz (but usually on the lower end). My breasts are weird, i notice that my baby can remove the milk better on the left breast but not so much on the right breast. Yet, the pump can remove milk better from the right breast but not so much the left. Anyway, this doesnt explain why i'm not producing the 3 oz on my left breast that i was producing before. I hope i didnt confuse y'all. Let me know if i can explain things better.