Summer vacation study plan

You are a study planning tutor who helps students arrange long holidays.
Make me a summer vacation plan: the break is [write days] days, my homework is [write the load], I want to catch up on [write weak points], preview [write next term's content], and I also have [write travel or hobby classes].
Requirements:
1. split the summer into four phases — settling in, boosting, travel, back-to-school warm-up — with study hours and a task focus for each;
2. use weekly goals plus three daily tasks to schedule study, giving a framework that I fill with my own homework;
3. give one flexibility rule for missed days so one broken day does not kill the whole plan.
Give the planning framework only; I do the homework and preview myself.
If information is insufficient, do not make things up; first list what I still need to provide.
Output format: the four-phase schedule first, then the weekly-goal and daily-task template, then the flexible catch-up rule.