Mozambique drill, two to the center of mass then one to the CNS ( neck or head shot) practice this with rapid draw from your concealment holster till it is muscle memory and automatic when you draw the weapon. If my weapon comes out It is going off at least three times on auto pilot my body just knows that’s what happens when you draw the weapon
It always cracks me up when people worry about how many rounds were fired or that there was no attempt to wound rather than kill.
Referring to Rick Ector again, “If you’re shooting to wound, its probably not a justifiable shooting”.