I will ask the parents why don't they want their son to know about his illness. If the parents are concerned about how he'll react or even his after-math (although he is already sick). If it about his maturity, before you tell him
you should consult with my hospital's ethic/legal counsel before you do, just to decrease personal liability.
The third basic component of an exercise program that includes cardio and flexibility would be cardiorespiratory endurance. These are the key components to have a good exercise program
