shot and deke with 102 flex stick cut down 1 foot for 10y/o

Shot and stickhandling looks ok, but flex should be much too strong for a 10y/o (weight 80pounds) Question is, how should I tell the boy not to use More

Shot and stickhandling looks ok, but flex should be much too strong for a 10y/o (weight 80pounds) Question is, how should I tell the boy not to use this stick (he received it from a star player) if he thinks he does well.
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