In a large bowl, whisk condensed milk, 2% milk, and pudding mix 2 minutes. Fold in sour cream. In another bowl, toss blueberries and raspberries with lemon juice.

In a greased 9-in, springform pan. layer half of each of the following. pound cake cubes, berry mixture and lemon pudding mixture. repeat. Refrigerate, covered, at least 2 hours before serving.

To serve, remove rim from pan. Serve with whipped topping and if desired, additional berries