I have decided to do nothing as I know from experience how the messenger will be shot. So to speak.
I remember how I felt when somebody said to me that something my son did was linked to autism. I was furious with her, outraged on my child's behalf and It never occurred to me that she might be right. Not for a second.
If I said something, it might look like I wanted other children to be autistic as well. So, if I say nothing, I hope that 6 months either way won't make too huge a difference.