What kind of pedal are you using?
It needs to be an expression pedal, Yamaha FC 7 or similar. To check you have it set right, take the following steps
1. Check full up is full pitch.
2. Push full down and check it drops a couple of semi tones
3. Depress a bit , half way roughly, and back off to full up. You should hear a nice slide up to full pitch. Practice this till you get a feel for speed.
4. If you feel this is too much or too little slide, or too much or too little foot movement, experiment with the range. It’s a personal feel thing.
Also make sure the pedal position and spring load are such that it’s comfortable to make the small foot movement required, adjust if it’s not.
Are you already competent at using a sustain pedal? Some people never use one, so they might have problems with easy foot control. You need to be able to control the right foot without really thinking about it. It has to be reflex.
Mike