Creating a realistic study plan that actually adapts over time is very difficult

Problem Description

As a student, I often try to create study plans at the beginning of a semester or before exams. At first, the plan looks perfect on paper, but as soon as real life happens — unexpected assignments, quizzes, or personal issues — the plan becomes outdated. Most study planners assume a fixed schedule and do not adapt when I fall behind or need to reprioritize topics. Updating the plan manually takes time and effort, so I usually abandon it altogether. What I need is a flexible system that adjusts based on progress, deadlines, and available time, instead of forcing me to constantly redesign my plan from scratch.