It's hard to align my progressive lenses and the targets at 25-30 feet so I've just been practicing putting as many down range hits in the main mass, and then at the head when the paper target gets so torn you can't tell where you hit. I think I could do this without my glasses now. At a pace that approaches better a shot/second, sometimes a lot better than that when I can get away with rapid fire at the range.
That's what I call gun control.
A thought for you to consider. I have taught a number of people to shoot and have worked on some adaptive handling for those who do not have steady hands.
One technique you may consider is to not to use your index finger as the trigger finger. Instead, use your middle / long finger. This may require a reduction in the “power” of the fire arm. The idea is that you use your index finger to point and push. This will often steady a shaking hand and will develop instinctive shooting. For some people it makes them faster and more accurate.
Your mileage may very.
Rules for a gun fight in order:
1) gun beats no gun - only carry what you WILL ACTUALLY carry. A gun left at home because it is too big does you no good.
2) hit beats no hit - .22 that hits beats a .44 mag that misses and NEVER fire a warning shot
3) accuracy beats big hole - .22 to the eye beats .45 to the arm.
4) 2 holes beat 1 hole - If it was necessary to shoot once, then shoot a second time
Just a note that if your eyes are a little tired it’s even more important to make sure your gun “points where you look”. Depending on what your favorite gun is you might need to doctor the grips. A lot of European style guns just naturally go “muzzle down” when you snap the gun up to fire. It’s the reason that the US military eventually added the swelled mainspring housing to the Colt 1911-—too many guys let the muzzle drop on a quick shot and the swell pushes up against the heel of the hand. Remember that if you actually need the gun it’s never going to be laying on a table in front of you at the range. It will be someplace else requiring you draw it all the while keeping your eyes on the target. Banging away at paper is good but is not all the practice you might need. When selling guns for personal defense I make people try different styles until they swear to God to me that the gun is pointing where they are looking. And that gun is almost never the one they first thot they wanted.