There are several things I would do. First, I find that most oversupply problems really do originate in a poor latch (no, I don't think it is the other way around most of the time). So, the protocol I find works well is to have mom feed several feedings on one side while improving latch (sometimes you need a sling for this, since babies will often stay latched better while moving). I have the mom take Natural Calm magnesium/calcium supplement --this is the only one I like well enough. I also have the mom take EFA's and I look at possible allergens that may be influencing infant behaviour (almost everyone by now knows my opinion--one stool per week is normal for no baby, or other human being for that matter). I will also suggest CST if other measures don't seem to be enough. Finally, my experience with vitex would lead me to use it to normlize pituitary function in this case. I would use the tincture--probably 2 droppersful first thing in the morning.
Jennifer Tow, IBCLC, CT, USA