I am trying to build up my breast milk supply and am wondering how much milk everyone gets. My daughter is 4 weeks old and am exclusively breastfeeding. I pump in the morning and will get 3 oz from the right breast and if I'm lucky 1.5 oz from the left. Sometimes, I won't even get an ounce from the left. I pump for a good 10 minutes after the milk stops hoping for more but usually I'm not so lucky. Is it normal to get less from one side? Is there anything I can do to even it out and get more from the left?