If your DC is at a school that does not prepare for 7+, competing against a lot of children from a pre-prep who are prepared for it, how much work do you need to do at home to prepare them? I am planning to do this myself, not tutor.
Start a year before the exam? Work 2-3 hours a week? Does that sound realistic? School publishes past 7+ papers so I'd know roughly what to aim for.
Thanks!