Sorry - I don't have any advice at all! With all my kids, my approach has always been to provide the support and conditions for them to work themselves - I'll help by buying study guides, signposting good online resources, buying stationery and gently reminding/nagging them about revision timetables etc. I also help with subjects I can when asked, and have offered tutors in 1 or 2 subjects for 1 of my kids - they didn't want one.
In all honesty, I am aware that this means my kids could almost certainly have done a little better - the 2 who have done external exams so far (1 getting GCSEs next week!) haven't got all A/Astar grades for either GCSE or A Level. But their results are their own, not a result of my work, our finances or hours of outside tuition. I often feel on Mumsnet (and among some friends) that this makes me a bit strange, however they have learned how to learn, got solid grades and been able to progress to the next stage. The DC I mentioned earlier is midway through a computing related degree at a RG uni, the next one just got A and B grades at AS and I'm expecting the youngest to get mostly As at GCSE.
It's maybe a bit idealistic, and I will acknowledge that we are fortunate they go to a good school with mostly good teachers, so I don't judge anyone for doing differently. I will say that it's partly based on how I was raised, as someone with lots of teachers in my family and 25 years' experience as a post-primary teacher myself. Exam results are important - but not everything.
Sorry that was a bit off-topic, but I agree with a PP - your child is young. Encourage them and give them opportunities to learn themselves.