Chill 2 1/2 cups milk in the freezer for about 10 minutes so it will be very cold.
Toast 1/2 cup shredded coconut on your stovetop in a non-stick skillet. Let cool while you make the filling.
Beat 2 envelopes dream whip with 1 cup of the very cold milk and 1 teaspoon of the coconut extract until soft peaks form. This takes about 5 minutes with my Kitchen Aid stand mixer
Add the 2 packages vanilla pudding mix, remaining 1 1/2 cups milk and the remaining 1 tsp of coconut extract. Blend at low speed to blend then beat on high speed for 2 minutes.