Six progressions done in place: pound dribbles, low-high crossovers, between-the-legs, behind-the-back, figure-8 around legs, spider drill.
Daily warm-up every guard should do. Five minutes builds the hand-eye foundation everything else needs.
Eyes up, never look at the ball.
Low stance, chest over knees.
Fingertips on the ball, not palms.
Game speed, actually push the pace.
Equal reps both hands.
Partner mirror. Two balls simultaneously. On knees (forces fingertip control). Eyes closed (advanced).