It really depends on you. You can make your annual life review as simple and quick or as deep and comprehensive as you want it to be.
Plan for the six 60-minute live sessions, plus time between sessions to finish the exercises. Life in Perspective recommends setting aside about 8 hours for the review itself, and reading the book alongside the program adds more.
Many participants find greater value in spreading the work over several weeks, giving themselves time to reflect deeply on each phase. The weekly rhythm of the program is designed for exactly that, with a break over the holidays to catch up or go deeper.