So I have often seen the question who is good in the rain, but never seem the question: which driver is bad in the rain? Are there drivers known for shitting their pants when there's wetness?
Bottas is the first name that springs to mind for me, he was never comfortable in the wet if I remember right. Also Checo has had some questionable performances in the rain this year, but that might just be low overall confidence. He was the only driver that couldn't find the grip on slicks during Canada quali and tried to set a time on Inters instead (which ultimately led to him not making Q3).
Why not have a practice session on Friday, sprint in the evening using some sort of preset order, then another practice session and qualifying on Saturday? That way you really separate out the sprint thing for Friday and keep useful practice sessions for the actual important stuff.
That preset order could be, same as qualifying last week, (reverse) order of the championship, whatever.