Starting with the left joystick.

There is a green casing holding in the joystick it will need to be removed to allow access .

There are 3 ribbons holding the section together. Remove them carefully.

Next unscrew the two screws holding down the casing. They will both still be 6.35 mm screws and will be able to be taken out by a J00 bit from the iFixit pro toolkit.

Now carefully left the metal piece holding down the green casing, it will be the last resistance. Lift out the green casing now.