Sorry it took me this long to respond, our computer fan died on us and so we can't use our computer at home until our new fan arrives.
Thank goodness I wasn't imagining it, I have thought before a pattern might have the wrong numbers, but then after I have slept on it I discovered it was because I was too tired to read it correctly.
When you say leave it, do you mean you would just try to adjust the rest of the numbers, or should I start over and do the 6 month size instead. I'm not very good at the math part, but I might be able to figure it out if I really focus on it. Thank you!