You're thinking at the marathon runner stage and they're still clearly in the crawl/walk stage. Maybe let them get some more flight time with it and experience doing more complex flight operations before jumping straight to the most complex ones?
It seems the 6 month grace period language was amended and you can still regain currency in a sim. If you go a year, IPC is still required.
Sourced from https://americanflyers.com/faa-instrument-currency-regulations/