Way to go, little A! I am so proud of you.
B vitamins do go through the system quickly, so yes, on game days have him take it twice daily, morning and night with meals. Vitamin D may also be of value.
By the way, my favorite musician, Neil Young, another Canadian, is in his 60's and still rocks. When he tours, he makes sure he eats plenty of carb foods like pasta, to help keep his energy levels up, as he bounces around the stage with his guitar. Hehe, he's also a big hockey fan.