In the same pan, warm milk over high heat. Whisk in cream cheese until melted, about 3 minutes. Add spinach, chopped artichoke hearts, Worcestershire sauce, hot sauce, and the mozzarella; stir to combine. Stir in the bacon and season with salt and pepper. Simmer over medium low heat until ready to serve. Transfer to serving dish and serve alongside a sleeve or two of Ritz Crackers.