I just came back from a conference about increasing milk supply. Lisa Marasco was the keynote speaker and it was awesome. I totally reccommend reading The Breastfeeding Mother's Guide to Making More Milk by Diana West and Lisa Marasco. They also have a lot of resources on the website: http://www.makingmoremilk.com/. I learned so much, and I wanted to share with you.
There are many reasons women don't have enough milk, aside from the obvious ones. This conference really opened my eyes to those and ways to help rectify the problem. Sometimes, a woman can't exclusively breastfeed; it also helped me to be more understanding in these cases and learn how to better support women in this situation.