Preheat the oven to 375 degrees. Coat the bottom of a 9 x 13-inch a glass baking dish with a few spoonfuls of the enchilada sauce.
Mix the mix shredded turkey with ¾ cup sour cream and ½ teaspoon salt. Stir well to coat the turkey.
Dip a tortilla in the enchilada sauce so that it is completely coated. Place a few spoonfuls of turkey in the center of the tortilla and then top with a small handful of shredded cheese. Roll up the tortilla and nestle it into the baking dish. Repeat with the rest of the tortillas until the baking dish is full of enchiladas.
Spoon the remaining enchilada sauce onto the tortillas. Cover the tortillas with the remaining cheese. Bake for 20–25 minutes, or until the cheese is melted and bubbling.
While the enchiladas are baking whisk together the remaining sour cream, lime juice, remaining salt, and water until smooth.
Once the enchiladas are done baking, drizzle with sour cream crema. Sprinkle with chopped cilantro and green onions.