Scott, deloading is based on loading—and the athlete's work capacity. E.g., here is a old practice of the Bulgarian national team. An athlete would start with alternating loading and deloading weeks, then would move on to two loading weeks plus one deloading, then finally 3+1.
Deloading is always built into an intelligently designed training plan—even if you do not see it on the surface. E.g., in Gallagher's cycles you add 2% of weight a week, while cutting reps every 4 weeks. If you did 400x5 in the last week of 5s, the next week is 410x3. It is heavier—but also easier than the last week's load. In addition, more equipment is typically added with every rep drop.
we explain the theory and practice of deloading in detail at the SF Lifter cert. For now, pick a tested program and do not try to insert some other coach's deload into it.