Nicki I think you have done exactly the right thing
. DS did nothing for the whole of the summer holidays last year - we went for walks, paddled in rivers, played outside - normal childhood stuff - too much pressure can backfire, I've found. He did what he thought was enough up to October (not necessarily what I thought was enough!), brushed up on his "sticky" questions until the first test and then the "other 12 types" before the second. It worked - if it hadn't then it wasn't meant to be - no point tutoring to pass a test only to flounder at a grammar school.