Ok I found this elsewhere on the web and it seems to work. Just posting it for anyone else that might need similar down the road. Perhaps there are things in this Regex that will prove problematic but it's on the right track.
/^(?:\w+\W+){0,1}(?:\w+)$/
Replace the "1" in {0,1} with the number of words you want to allow over the first. In other words mine allows 2 words. To allow 6 words, change the 1 to a 5 like {0,5}