Yes! Cutting this recipe in half will make approximately 32 ounces (for 8oz jars) of jam. Use 2 lemons, 3 lbs of peaches, and 1 1/4 - 1 3/4 cups of sugar. When making a smaller batch, the preserves won't take as long to cook - about 30 minutes to 1 hour. Stir frequently, and use the freezer test (explained in step #3 of the recipe) to determine when the preserves are done.