The recipe can easily be split in half into a log for 8 to 10 people. You then bake only one cake on one baking sheet.
If you prepare the cakes the day before, flip the cakes onto parchment paper. Remove the top paper. Roll the cakes, while still warm, with the paper from the wider side (for the bigger log) or the shorter side (for the regular-sized log). Let cool and wrap well in plastic wrap.