Hi 321c, try this:
1. Adjust the pedals so that you can comfortably apply full rudder deflection from your seated position.
2. When landing, ensure your heels are on the floor.
3. After touch down, while the auto brakes are doing their thing, slide your feet up so that the balls of your feet are near the tops of the pedals.
4. Braking application is markedly improved with less effort because of the increased leverage. However be careful and very gentle with the increased leverage.