Why track DMM progress? Let me illustrate.
I come from a city in America called Minneapolis. It has many beautiful lakes. We like to rent canoes and go boating on them. I learned something about canoeing. Keeping my eyes fixed on the other side of the lake matters. Otherwise, it is easy to paddle around on the lake for hours without actually crossing it.
Some people engage in disciple-making efforts without tracking their progress. They are a bit like me on the lake. They take their eyes off their goal.
That is fine if you just want a fun way to spend a day off. But if you are serious about making progress in starting a DMM, you have to measure forward movement.
You need to know where you are at. You must be able to determine whether or not the movement is multiplying.
Multiplication is your destination. Stay focused on it. The only way to know if you are getting there (or not) is to keep careful records and regularly measure progress. Are you seeing multiplication growth or only addition? Tracking allows you to celebrate, assess, and make needed changes.