Add an additional repeat and eight stitches in border to keep proportionality.
I was hoping to use more of the yarn, but for a whole additional main body repeat I would have almost certainly run out, and more stitches in the border would have been a problem for proportionality. Oh well, at least it’s done!
263.1 grams in total shawl
30.3 grams left from green
19.1 grams left from white