Well, then the question becomes are you going too light during accumulation
here’s why:
We want the transition from accumulation to max strength to be a smooth as possible in order to minimize adaptation stiffness.
Thus, depending on your strategy for max strength the last week of accumulation should be within 10% of the first week of max strength. In order for this to occur, and in order that you are not making excessive jumps during accumulation, we know that accumulation is going to have to begin at a defined point, intensity wise, relative to the first week of max strength.
For example (relative to the information you sent me): if the first week of max strength is 80% of 5RM then the last week of accumulation should be somewhere around 70-75% of 5RM. Thus, week 1 of accumulation should be around 50-60% of 5RM.