Animate camera between 4 rotate toggles

The blueprint in itself is functioning how I want it to. A camera attached to a pivot point in which controls the camera to turn 90 degrees each time the player presses q or e. Alike that to an old ps1 game pressing r1 and l1 to turn the camera 90 degrees but I cant figure out how to make a smooth “animation” to go between the rotations each time one of the buttons are pressed.