Proving yet again that I live a charmed life, my break from teaching and the ammo shortage happened simultaneously so I've been able to dodge the whole kitten problem.
However, during the last ammo shortage I did make some pretty significant changes to the program. They were due anyway because early on I had a lot of students get burned out half way through day 2. Part of the change come by adding more dedicated lecture time to explain how/why I do things a certain way. Part of it came from getting more efficient with early drills that can teach the same concepts in a few rounds instead of many mags. And part of it came from taking out certain topics or drills, replacing them instead with things that only one person at a time can shoot such as Triple Nickel, Hackathorn Head Shot Standards, and the barrel/figure-8 drill.
The net effect was we went from 1,500rd per class to 1,000-1,200 per class. Of course, that still gets shifted class by class depending on the students, range, weather, etc.