Re: very low supply on one breast
Producing more on the smaller side is going to depend on whether or not that side gets the stimulation necessary to cause it to produce more. You can make the small side produce more by pumping it more often or by offering it to the baby more often, preferably offering it first so that the baby feeds off of it when she is hungriest and most likely to empty it thoroughly. The key to making more is always to remove milk more often and more thoroughly, and that works whether you're talking about one breast or both breasts.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"