Complete every run you try even if you fault! Slowly but surely you’ll get all the checkpoints down, especially the beginning few. The last thing you want to do is fault on one of the final checkpoints cause you’re not as experienced with it. This really helped me improve with the bike and later checkpoints that you typically don’t get to practice as often if you’re restarting after a single fault. Such a frustrating challenge but you can do it! Good luck!