oh man its going around again big time. sounds like you have the same regiment as my wife and I. if either of us starts to feel anything, we immediately grab pho from a place in town we know uses real bone broth, double down on those vitamins, and make hot toddies with whiskey, hot water, honey, lemon, and cinnamon instead of nyquil. If it gets really bad, we'll convert to the nyquil to get the better sleep but we try to start with the more natural whiskey toddy if we can.
I used to hate the idea of deloading, now I love it. it feels like it actually is a form of freedom that allows me to go balls to the wall for 3 weeks, trying to full spend what I have in the tank knowing that a deload is just around the corner. Only thing I'm noticing for me is that I think my deload week would be a good time to get some form of real cardio in, like sled pushes since you recover well from them. I think my squats would benefit from better cardio right now.