u/Effective-Jicama-409

Please help! I am trying for the first time to make a simple cardigan. In the pattern from this link, I am working in size medium. How do I pick up 131 slip stitches along the edge of the ribbing if it only asks to crochet 105 rows of ribbing? I would greatly appreciate help and explanation!

https://www.allaboutami.com/olivewood-cardigan/?utm\_source=Pinterest&utm\_medium=organic