To be honest, your grades are good. I would suggest starting with a little revision. For example, once I started revising for my chemistry paper 2 mock back in December 2024, I got onto a habit pretty quickly, and I’m still maintaining this revision habit.
Also, make sure you practice past paper questions, like good websites are pmt. I do past papers, and if you do those, and then mark them after, you can see your progress.
Also, there’s also websites like Cognito and Seneca that you can use.
For context, here’s my grades: (all are grade 8 targeted btw)
Biology-Grade 9 predicted, grade 9 in my most recent mock
Chemistry-Grade 9 predicted, grade 9 in my most recent mock
Physics-Grade 9 predicted, grade 9 most recent mock
English language-Grade 7 predicted, grade 7 most recent mock
English literature-Grade 7 predicted, grade 7 most recent mock
Maths-Grade 7 predicted, grade 6 most recent mock
French-grade 6 predicted, grade 6 most recent mock
History-Grade 8 predicted, grade 8 most recent mock
Make sure you do focus on your weak points btw