I think just through discussing it with all of you, I have figured out what to do. Based on the stitch count before and after the decreases, I think I have to work 12 rows and then decrease. It's the only thing that makes sense to me, even though it is not like a standard set of instructions. LOL.
Thank you all for your help with this. Sometimes it helps just to talk it through, and other people's idea get me thinking it through more clearly. Thanks again!