I usually slowly end up in a situation where more or less all of my fountain pens are inked up with something. Where some of them I use a lot, some a little and some not that much beyond keeping them from drying out.
So, I’ve reached the point, again, where I’m just going to write, one by one dry and clean them, and not ink them up until they’re all empty and clean. And ink just a few of them.
I usually do this rather than just empty them all, to make it more difficult and a pain for myself to avoid getting back into the same place too soon.