Drying your IEMs out is awesome, and you’re doing better than 98% of people. It will extend the life.
However, drying them won’t remove the salt and mineral deposits that are left behind from the evaporated sweat. That’s more corrosive than the moisture itself.
Unfortunately, there’s no easy way to remove the deposits. It’s like cars during the winter in areas where they salt the roads. It’s the dried salt that sticks to the car that continues to cause corrosion, long after the moisture is gone.
That’s why I just avoid the problem altogether and don’t work out with my nice BA stuff. A cheap $10 hybrid KZ like the ZS4, ZST, ZSN? Sure, what do I care. A cheap dynamic? Even better. $300 IEM? I’ll save that for listening at home on the couch after my workout.