Ah, yeah, I would limit it to once a day as you are doing. Sorry if I was being presumptuous.
And I'm in a similar boat with work. Some coworkers have started calling out which puts more work on the shoulders of those of us still coming in and the build up in stress and exhaustion is NO DOUBT weakening our immune systems. The only good thing is that when I do, inevitably have to call out sick--whether it's from the virus or from stress-induced fatigue--they can't say jack shit about it.
My wife wants me to call out now, partially because she's worried about me but also because she's worried for herself (she already has a medical issue or two that would mean if she got the virus she'd be hit harder), but I have a pretty ingrained work ethic that keeps me going in until they tell us to stop or until I keel over.