I saw some numbers based on ?phone location data? which suggested that Monday was almost as busy as the weekend, the best time is mid-week. And the later the better, it gets quieter after 7.30 or so, quieter still in the last hour before closing. You're running a bit of risk on stock levels but IME it's not too much of a problem at the moment apart from a lot of baking stuff and a handful of specialist items where supplies haven't caught up with the new normal.
More on hydroxychloroquine from
a study based in Paris "The overall survival rate at day 21 was 89% in the [hydroxychloroquine] treatment group and 91% in the [group without hydroxychloroquine]". So yes, lots of people treated with hydroxychloroquine get better - but that's because they're also being given oxygen etc and not because of the hydroxychloroquine. Would you rather be in the group with 9% death rate or 11% death rate?
Also 10% of the hydroxychloroquine group had to stop treatment with hydroxychloroquine because of heart flutters.