List the outcome in one sentence a friend could verify without your explanation, then choose activities that serve only that outcome. When Maya did this for a two-day UX challenge, she built a single interactive flow rather than a full prototype, finished early, and used leftover time to user-test. Activities multiply endlessly; outcomes clarify what is enough and when to stop.
Ask what can truly be completed, end to end, in two focused days with your current skills and available energy. Be honest about meetings, meals, and rest, then plan around them. When Dev set a limit of six focused hours each day, he avoided midnight heroics and still shipped a small data visualization with documented steps. Real constraints create real progress.