Admittedly, I might be a "slow learner", especially if you ask my wife.
But, for me, the answer was buying a pile of ammo and practicing at our local Pima Pistol Club. Once you reach a reasonable level of experience and proficiency, only occasional shooting is needed to keep you sharp. But, you may have to work at it for a while at first. I did.
Oh, and stick with no longer than 7 yards for a while. It's a great confidence builder when you can see you target.
In any event, you now have a good excuse to go shooting. If my experience is any indication, you will be surprised and pleased at how well you shoot with the original sights after several hundred rounds.
Best of luck and have fun!