My ds is 10.5 months old and for some reason in the last 2 months has decided that he will only nurse on the left side. He screams when I try the right side. He's down to only nursing 3-4 times a day and I can get 7-8oz out of my left side alone so supply is not an issue. I have tried to pump the right but I have pretty much dried . Now I have a c cup boob and an A cup boob ( yes I am normally small) Nice, I know !!