Have you seen this page?
http://www.mobimotherhood.org/mm/article-pcos.aspx
I am not sure beyond what I just read how PCOS affects milk supply. I do know of course bfing is all about supply and demand. I used galactalogues for about 6 months, then found they weren't needed as much and now I'm pretty well established at 13 months. I do eat whole grain homemade oatmeal every day, but I'm guessing that's anecdotal as well and nothing matters as much as breastfeeding on demand. To make that easiest:
1. Don't set a feeding schedule
2. Co-sleep if possible (if bed sharing is out of the question for one reason or another, consider at least an attached bassinet such as the arms reach co-sleeper and when baby is able to roll, you could consider "sidecar-ing" the crib).
3. Skin-to-skin, baby wearing (aka kangaroo care). Invest in a moby wrap or some other type of wrap like a ring sling for early on so your wife can wear baby around the house, topless, so baby can have access to her breasts easily.
4. Remember any time at the breast is good for supply boosting.
5. Consult with a IBCLC (Board-Certified Lactation Consultant) to correct latch issues, get pre and post feeding weighs, etc.
These are all things that worked for me and I initially had low supply for no medical reason other than long, traumatic birth that left my body conserving resources. As a full time working mother I will never regret the amount of time and energy I've invested in breastfeeding my son this long (with no end in sight) because I feel it helps me give him something that will benefit him for life that no one else can give him, and it helps me feel connected and deeply bonded with him even though I am away from him 40 hours per week.