It really might not be too late. In one of the books I read, they showed some pictures of hatchling Burms, that had dried out alot during incubation. They still hatched, but showed signs of mild dehydration; wrinkly skin. I would gradually Up their humidity.. seems like the hatchrite Is like using old-school verm/perl, that does need to be checked and monitored, and maybe water-added, during incubation in my experience.