Stretch that ammo even more. I stay in tune pretty well at 50-60 rounds a session, maybe twice a week. Work on presentation from the holster 2-3 rounds up close, from the holster and low ready at 7-15 and deliberate, precise fire from 25 yards or farther. Change up when it gets boring but don't stray far from those fundamentals.
Dumping magazines as fast as you can won't get you much except an empty wallet.