Do you have an apple product such as an ipod or iphone? I'd get the free shot timer app. I don't know if there is a free app for another type of OS such as blackberries.
App Store - ShotTimer
When I'm in my basement and have taken all of the precautions to do some dry fire drills here is what I do. YTou don't need the shot timer but it sure is nice as that is the only way to gauge how fast you're really getting.
At 5 yards I like to get off 2 shots from concealment in 1.5 seconds. Which means you set the start to random and the par time to a second and a half. Slowly bump it up the as when you pull the trigger you can tell if you're beating the timer and you can also tell how close you're getting to the target. For me to shoot twice in 1.5 seconds I try to get a good "shot" off in 1.2 seconds.
It's also a good drill to practice to make sure your not sweeping the gun up (it's supposed to come up and in close to the chest, then push out) and so you can tell what your weak hand is doing. (Supposed to lay flat on your chest as you're drawing our gun and meet your stong hand as your pushing the gun out from your chest) Too many times I catch myself not properly following steps and my weak hand is a little too wild to the point of my muzzle covering my weak hand.
My trigger control drill is pretty easy. Some suggest a dime on the front sight but I figured out that if I trap the trigger (hold it back after it clicks) I can tell if my front sight is dancing. All done dry fire of course. Just remember to pick something out that you're aiming at. Meaning don't aim at the middle of the wall or something. Pick out something small so you can tell if your sights are pulled off by the surprise break of the trigger.
I also check my trigger control at the range with the "ragged hole drill". That is how I was taught it was, I have no idea if that's what others call it. At 5 yards shoot at a 2"x2" square or whatever small you have. 5 yards is not that much, 6 paces for me. It really feels too close until you realize that even at that distance no one is perfect. Hard part is finding ranges that allow you to shoot from that far away. Shoot the center of the square 5 times. They call it a ragged hole drill because you're trying to make a 5 shots though the center. This is the real test of you're trigger control. Do the test, dry fire at the square 5 times, and do the test again. You'll see significant improvement.