Heat 1-1/2 teaspoons oil in a Dutch oven over medium heat. Add carrots, onion, celery thyme and garlic, and cook 5 minutes, stirring frequently, until onion is tender. Add chard, kale, water, stock, tomato puree, sugar, salt, red pepper and diced tomatoes. Stir to combine. Bring to a boil, reduce heat, and simmer 45 minutes.