If the old-fashioned soybean paste flour is too little, you can add it a second time. If there is less flour when making old-fashioned soybean paste noodles, you can add noodles twice. You can add an appropriate amount of flour and then stir and knead again until the flour and soybean paste are fully mixed and a dough suitable for making noodles is achieved. Make sure the added flour is evenly distributed and avoid making the dough too wet or dry. You can gradually add flour as needed until you reach your desired dough texture. Remember to adjust the proportions of other ingredients appropriately according to the amount of flour added to maintain the original combination and taste of the ingredients.