you will very likely need more. Most adoptive moms need to stay on dom throughout their time nursing, although some have gone down to lesser doses.
You can get it from Planet Pharm, although they are called something else now. Check out under the For Sale board, as Lenore has a post there stating their current information. I have been getting my dom from them for over a year. It is the cheapest place to get it, they are very reliable, and you don't need a prescription.
Good Luck!