Yes! And there really isn't pro-breastfeeding scheduling as breastfeeding is not meant to happen on a schedule. Many a parent who followed a feeding schedule ended up with a baby who was diagnosed with failure to thrive. You can absolutely have a routine, but that routine will still include on-demand feeding. So no matter when you wake, sleep, or play babe is still meant to be fed on demand.
.Most of us here are doing on demand feeding, no scheduling involved, with letting the baby set the loose schedule. I would not want to be involved with any group that suggested that because I was nursing -- or bottlefeeding even -- my baby for the third time in an hour that I would be doing something wrong or would even be questioned about. Every baby is different, and if the group is suggesting that I conform to some book instead of listening to my baby's needs, then that is a group I would not be a part of. And I have done that several times in the last 7 years since my first baby was born. I walked out of several mother's groups at my church and in the neighborhood because I could tell the philosophy was not one I wished to listen to.
For books, I would suggest Womanly Art of Breastfeeding and anything by Dr. Sears.