My child has been going to a tutor since September and the feedback was that he was doing very well.
He has his practice papers at school this week so I've just purchased the NFER papers to do at home.
He did the VR at home and he scored 48/87 = 56%
Don't worry, the NFER papers are difficult, and I would be inclined to keep them to a few weeks before the test, especially if NFER tests are used in your area. I gradually built up to them over a few months of using other books and papers with my children (who didn't have any other tuition) and by the time of the test they were able to manage them and they both passed. This was in Birmingham, where they used to use NFER till a few years ago. Not sure where you live, but you have probably got at least till October to build up to this standard.