Sour Cream Chicken Enchiladas

Name: Sour Cream Chicken Enchiladas
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: Mexican
Ingredients: 10 flour tortillas (medium size ); 2 cups rotisserie chicken (shredded); 2 1/2 cups shredded Mexican blend cheese (divided); 2 tablespoons salted butter; 2 tablespoons all purpose flour; 1 cup chicken stock; 1 cup whole milk; salt & pepper (to taste); 1/2 cup sour cream; 4 oz mild diced green chiles (1 can); 1/2 teaspoon cumin; cilantro (fresh, chopped (for garnish))