When practicing your shot you want to make sure that you are shooting at game speed. It doesn't make sense to practice shooting one way, and then switch it up in a game. You want to be consistent and build good muscle memory.
The 3 point partner basketball shooting drill will allow you to be able to work on your shot at game speed, and also allow you to get up a lot of shots in a short period of time. Developing the muscle memory for your shot is key in becoming a great shooter and the only way to do that is through shooting and spending time in the gym doing the right basketball drills.