Drop the incubation period humidity. Stop turning them a couple of days earlier.
Rain kills fertility.
I have 5 eggs due to hatch in one week. My humidity has been 50-55% dry. I added a small cup of moisture control stuff to the incubator. Because the air cells still look small. It brought it down to 25%. Do you think it's ok to run 25% for the next 4 days until lockdown??