Can’t help with riding faster yet but you bring up drinking water a few times, might look into the kits they make to mount the drink hose to your helmet so it’s hands free.
His fastest lap at that race was a 16:35. There was only one rider in 250FC that turned a faster lap than that. Yup, I stand by what I said in the video. Doesn’t matter how much experience he has, he should be in C class and if he continues to improve at this impressive rate, B class next year.