Not for a plan. For evidence that someone knows what is wrong. The fastest way to lose the quarter is to commission a study; the fastest way to hold it is to produce a defensible read of where the operating model stops converting, and act on the two conditions that matter most.
A long diagnostic spends its time on breadth. What you need is depth on the conversion points: what enters, what commits, what executes, what proves. A focused read across the operating system is enough to surface whether the conversion structure is holding. That is enough to decide what deserves a deeper read. The instrument exists because the pressure is normal.
Accelerating along an unevidenced path. Moving faster produces more spend and no more proof, and it consumes the authorization that would otherwise fund the correction. A reset is not a restart — expect a meaningful share of the work to survive unchanged.