After I made the A Button Extender, I found that I still need to move my hand in order to press the B button. This is a simple extender done in tinkercad, it uses the screw hole as a pivot to press the B button.

It feels not as crisp as pressing directly on the B button, but it works.

Insert the pillar inside the screw hold and lock the B button with the notch, may require minor adjustments to insert depth to achieve the best tactility (a soft click)