12 Volt dirt racer - monster trax

For my son's second birthday, I wanted something special. Some of my friends bought their little ones a power wheels scooter. We decide to purchase a monster trax since we have dirt trails nearby. While we love the item, my son is still too small to reach the pedal. Trying to figure out what to do to fix this proble since there is an 88lb limit. Although, I would easily fit, I weigh more than that! We currently hold the pedal down and he moves forward a little bit. He loves it and asks for more. Too cute!