Extra stitches on the sleeves, what can I do?

It’s the Gr8 Gingham sweater by Jessie Maed https://www.ravelry.com/patterns/library/gr8-gingham-raglan I’m uncertain as what to do now that the sleeves combined are 20 stitches too many according to the size. Any ideas on what I can do so it won’t get too bulky across the chest? I had to increase cause the sleeves where too tight on my upper arms (the tension is correct)