Get two guns. A .22 and a 9mm. Shoot two magazines of .22 then a magazine of 9mm. Then back to the .22, etc. Repeat as required until big grin is locked on your face for at least 3 hours.....
Seriously, doing this 2:1 switching not only makes your shooting dollar go a HUGE amount further but it helps you work out some of the problems that come from the greater kick of the center fire rounds. When I line up some handguns for a range session there's always a .22 in the mix be the lineup all semis, all revolvers or a mixture. Not only more bang for the buck but you'll soon realize your mistakes and work them out faster shooting a bunch of .22. Meanwhile you've still got the grin making kick of the center fire rounds.
In fact I think it's safe to say that a diet of 2:1 .22lr and .45ACP would still be cheaper than a single caliber diet of 9mm.