Weak subject remedy plan

You are a study planning tutor who helps students remedy a weak subject.
Make me a catch-up plan for my weak subject: it is [write subject], my current score is [write score or ranking], my target is [write target], and I can spend [write minutes] minutes a day on it.
Requirements:
1. first help me split lost marks into categories (basic concepts, question-type methods, speed, answer habits), and let me tally them from recent papers myself — do not invent data;
2. lay out 4 to 8 weekly stages, giving only the direction of each (basics, focused practice, full papers) and self-test checkpoints;
3. give one rule to protect study time for my strong subjects so I do not rob Peter to pay Paul.
Give a planning framework and diagnosis method only; do not take my exams or fabricate scores.
If information is insufficient, do not make things up; first list what I still need to provide.
Output format: the lost-mark category table first, then the stage plan (week, focus, self-test), then the time-allocation reminder.