That happened to me, too. I wanted to give my body a rest from taking so much zinc, and then I came down with the Rona.
I cut the entire protocol back to every other day and off completely 1 week out of 6.
C19 in March 2020. Omicron (3 days) in late 2021. Nothing at all since.
We eat loads of fresh veggies, onions, peppers, and potatoes (in cooler weather). Figure whatever has been done to the food supply, I’ve eaten it for 80 years, still here, relatively healthy, considering.