Thank you all so much for your replies and good to have other points of view and advice that I can share with him. I agree that 6-9 months wait is nothing and I googled and he couldnt take his next exam until 14 (when he is year 10) so as you all said there's no rush and he can work on making his Intermediate as good as poss. I was really worried that this would slow down his dance training, but as you all said, this might not be a bad thing anyway.