Red Velvet Ice Cream Cake

Name: Red Velvet Ice Cream Cake
Ingredients: Cooking spray; 1 3/4 cups granulated sugar; 1 1/2 cups buttermilk; 3/4 cup neutral oil, such as canola or avocado; 1 tablespoon vanilla extract; 1 tablespoon red food coloring; 1 1/2 teaspoons kosher salt; 2 1/2 cups all-purpose flour; 1/3 cup Dutch-processed cocoa powder; 1 1/4 teaspoons baking soda; 8 ounces cold full-fat cream cheese; 1 (14-ounce) can sweetened condensed milk; 1/2 medium lemon; 2 cups cold heavy cream; 2 teaspoons vanilla extract; 1 cup cold heavy cream; 1/4 cup powdered sugar; 1 teaspoon vanilla extract; Sprinkles, to decorate (optional)