Hello Josie, This boulder is friendly for short people with a special start : You can start with a double toe-hook or a heel hook (the last one was my beta) and hold the start hold :)
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.