What a monthly update should say

Monthly planning is the work that keeps a schedule honest. A baseline left alone goes stale.

Each period should produce three things.

The update. Progress on the activities that were in the window, with the data date agreed before anyone starts typing. Remaining duration comes from the people doing the work, not from a formula that assumes the original duration was right.

A look-ahead. The next few weeks, in enough detail that a supervisor can see what must start, what is waiting on access, and what is waiting on someone else's file.

A note. What moved, and why. A date that slipped because a delivery moved is a different story from a date that slipped because the logic was wrong. Write the difference down. A variance report without that note invites an argument about the software.

This is a schedule of rates or a monthly amount, not a new product every month. The same person should be able to open last month's file and this month's file and see the change.