Low Carb Cheesy Bacon Cauliflower Chowder

Name: Low Carb Cheesy Bacon Cauliflower Chowder
Ingredients: 2 tablespoons all-purpose flour; 2 cups low-sodium chicken broth (divided); 10 slices center-cut bacon (chopped); 1/2 small yellow onion (peeled and diced); 1 stalk celery (diced); 2 cloves garlic (minced); Salt & pepper (to taste); 4 cups grated cauliflower ((1/2 of a large head)); 2 tablespoons water; 2 cups 1% milk; 3 dashes hot sauce (plus more to taste); 2 1/2 cups sharp cheddar cheese (divided); Green onion (thinly sliced, for garnish)