Hi Helen, I'm Dani from Germany, 44 years old and addicted to bouldering in Bleau. That's why I took 2 months off for living here. So if you meet up again let me know, I'm happy to join you. Last year I climbed my first 6a boulders here and motivated to improve myself :-)
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.