How to Build a 90 Day Growth Sprint That Actually Holds Up

Most 90 day plans fail before week four.

Not because the plan was wrong. Because the team confused activity with progress. They picked too many initiatives, ran them all at once, and ended the quarter exactly where they started, except more tired.

A growth sprint is different. A sprint is a focused 90 day push on one layer of the operating system, with one team, with a clear scoreboard, and a clear handoff. When sprints are done right, they compound. When they are run like a normal quarter, they just burn through budget.

We run sprints inside fractional CMO engagements, inside the Growth Strategy Sprint offer, and inside board level advisory work. The structure does not change much by company. Here is how we run them.

Phase one, diagnose. Weeks one to four.

The first month is not about ideas. It is about evidence.

In the first four weeks, we are trying to answer three questions. What is broken in the operating system. Why is it broken. What will it take to fix it.

The diagnose phase has three workstreams. Interviews. Data. Customer voice.

Interviews mean working sessions with the CEO, the sales leader, the marketing lead if there is one, and a few customer success operators. We are not asking for opinions. We are asking what gets in their way, what they would do if they had a magic wand for one quarter, and what has been tried before and failed.

Data means a read of the funnel, the pipeline, the close rates, the renewal rates, and the unit economics. We are not building a perfect dashboard. We are looking for the place the math breaks. In a B2B company at 10M to 50M, the math usually breaks in one of three places. Top of funnel volume is fine but quality is wrong. Conversion is uneven by segment. Retention is lower than the leadership team realizes.

Customer voice means short structured calls with three to five recent customers. The buyer's exact words are gold. We use those words on the new positioning, on the demand pages, and on the proposal templates.

At the end of week four, we write a one page diagnosis. The CEO and the leadership team read it before the rebuild starts. If anyone disagrees with the diagnosis, we resolve it before any work begins.

Phase two, rebuild. Weeks five to ten.

The middle six weeks are where the work happens.

Rebuild does not mean rebuild everything. It means rebuild the one thing the diagnosis identified, and stand up the cadence to keep it running.

A typical rebuild includes a sharper positioning sentence the CEO and sales can use, a fix to the broken layer in the operating system (strategy, leadership, or execution), and a new operating cadence with a scorecard.

Rebuild is also where we introduce co-ownership inside the team. The marketing lead, the CEO, and we share one scorecard. The growth number is on the seat, not on the dashboard. If something is missing the number, we are accountable for figuring out why before the weekly check in. That is what changes the team's behavior. Not the new tactics. The new ownership.

The end of the rebuild phase is the first measurable lift on the board. Not a victory lap. A signal that the new system is starting to move.

Phase three, prove. Weeks eleven to twelve.

The last two weeks are the proof phase.

The point of the proof phase is to confirm that the rebuild was real, not a flash. We run the operating cadence for two full cycles. We hold the team accountable to the scorecard. We let the data come in honestly.

If the lift is real, we move to handoff. If the lift is not real, we run the diagnosis again before the sprint ends. We do not pretend that 90 days produced something it did not. The point of the sprint is to leave the company with the truth, not with a story.

Phase four, handoff. Quarterly review and beyond.

The sprint does not end with a slide deck. It ends with a quarterly review.

The quarterly review is run by the CEO, the marketing leader, and us. The scorecard is on the wall. The 12 month plan is on the table. The next 90 day sprint is named, and the next owner of each layer is named.

If we are continuing as fractional CMO after the sprint, we run the next quarter. If the sprint was the engagement, we hand it off to the internal marketing leader and check in quarterly for the first year as part of the handoff.

The handoff is the part most consultants skip. It is also the part that determines whether the sprint compounds or fades. We do not skip it.

What kills a sprint

A few patterns kill sprints reliably.

Trying to fix more than one layer at once. The whole point of a sprint is one focused push. If the team is also redesigning the website and hiring three reps and changing the CRM, the sprint is not a sprint anymore. It is just a busy quarter.

Skipping the diagnosis. The team is excited to act. The CEO wants to see motion. The pressure to skip the first four weeks and start running tactics is real. We push back hard here. Diagnosis is the most leveraged time we spend.

Refusing to make the hard call. Sometimes the diagnosis surfaces something the leadership team did not want to hear. A founder who is the bottleneck. A marketing leader who is wrong for the seat. A product that does not differentiate. If the team refuses to act on the diagnosis, the sprint cannot work. We will say so before we sign.

When a sprint is the right move

A sprint is the right move when a CEO knows growth has stalled and cannot put a finger on why. It is the right move when a CEO is about to hire a CMO and wants clarity on what to hire for. It is the right move when a PE operating partner wants a fast reset across one or more portcos before more capital goes into the go to market line.

A sprint is the wrong move when the company is pre product market fit, when the team will not be available during the 12 weeks, or when leadership is not willing to make hard calls based on the diagnosis.

What to do next

Take the Growth Assessment Scorecard. Twelve questions. Six minutes. A personalized six page report that names the layer to work on first.

Book a 30-minute growth call. We will talk through what the scorecard surfaced and whether a sprint is the right fit. If we are not the right fit, we will tell you on the call.

The sprint structure works because it forces focus. Most of what makes growth hard at 10M to 50M is not a lack of ideas. It is a lack of focus on one idea long enough to see if it works.

---

Chris Lundell is the founder of CMO Grow. He is a three-time CEO across enterprise software and residential solar, and currently serves as Chief Compliance Officer and a Board Member at SunPower.