The real difference
Project managers are measured on delivering a defined scope on time and budget. Product managers are measured on whether the thing was worth building at all. One optimizes execution; the other decides direction. Confusing the two is the most common reason this pivot stalls.
What to build
Develop the muscles PjM doesn't exercise: customer discovery, opportunity sizing, prioritization frameworks, and reading product metrics. Practice defending a 'we should build X, not Y' decision with evidence rather than a Gantt chart.
Making the leap
Your organizational credibility means teams already trust you to run things — use that to volunteer for discovery and roadmap work on a live product, then transfer internally. The fastest way to know if this pivot is realistic for *you* is to run your actual background through it. Start a free AICareerPivot assessment — it maps your transferable skills to the target role, flags the real gaps, and builds a week-by-week plan.