I think I just took double the lower dosage - I'm pretty average sized, I guess.
And you supposedly do need to keep up with the Goat's Rue - apparently, if you went cold-turkey off of it, you would see all the changes disappear in just a few days. But it's pricey, so I gradually decreased the dosage and watched to see if DD seemed less satisfied at the breast, needed more supplementation... For months now, I've been taking half the recommended dosage, and just in the last few weeks, skipping every other day. (We're approaching a year, so I'm starting to feel more low-key about it. Not that I want to wean, but she's eating other things, too, you know.)
I knew how much DD was getting b/c I worked with an LC for months, and we did weights before and after nursing. (It was really cool - the HMO let the LC set appointments up as "health classes," which are free, by having 4-6 women all come in together for an hour - a little nursing circle