My baby is 10 1/2 months old and I am only breastfeeding her. I have solely breastfed her up to this point in her life. I have an overactive letdown and feed her only one side at a time. I don't know how much she weighs but she looks overweight. How often should I breastfeed her and what should I do? Initially I may have overfed her because I was concerned she wasn't being fed enough from one breast but now I only feed her when she's hungry. What should I do?