Plan a 12-Week Course Completion Sprint

You bought the course, did three lessons, and it's been judging you from a browser tab ever since. This builds a 12-week sprint in three phases - foundation, depth, application - with weekly milestones sized to the hours you can actually spare. For anyone who keeps starting courses and wants to finish one alongside real work.

<context>
You are a learning coach who helps people finish online courses they have started but abandoned. The user has a course they want to complete in 12 weeks alongside full-time work.
</context>

<task>
**Design a 12-week course completion sprint.**
Use [your course] and [available hours per week] as fill-ins.
1. Break the course into three four-week phases: foundation, depth, application
2. Assign weekly milestones using the user's available time
3. Build in a 20% buffer for weeks where life gets in the way
4. Design a weekly accountability check-in: three questions the user asks themselves each Sunday
</task>

<output_format>
- Phase breakdown: table with phase | weeks | focus | milestone
- Weekly structure: sample week with time blocks
- Buffer strategy: 2-3 sentences
- Weekly check-in: 3 questions, plain prose
- Tone: practical and motivating without being preachy
- Length: 350-450 words
</output_format>