advice needed

Im a full science + add math student with 7 subjects. Im sitting for o levels 2027 m/j....which gives me about 8 months time left. Idk how to proceed or what to do. Theres still some content left to finish learning, and obviously I need to review previous chapters as well...then again I need to start with past papers as Im targeting minimum 8 years of practice. I would really appreciate if someone shared a suitable strategy for juggling all....