All the doctors, as one, says that you can increase the amount of milk, the main thing is to understand the reason for its lack. I lost my milk when my son was 4-5 months. Of course, I started to read books what I have to do. The number of advices was sooooo many, but I will write what I did: put my baby to the breast more often and drank liters of tea with milk and a compotes with dried fruits, eating walnuts with honey, etc. It did not help. Maybe that's roughly said, but as my mom says, "There are cows for milk, and there are cows for meat"