When the potatoes are cooked, add mixed soup, mushrooms, and bacon to Crock Pot. Stir gently but thoroughly. Let cook for another 20 - 30 minutes. Test broth for flavor and thickness. At this point, you can add more Italian seasoning, minced garlic, salt, and/or pepper to your taste. If the soup is too thick, add water in small increments until you have your desired consistency. If you prefer a thicker consistency, mix some cornstarch and milk then add to the soup.