Keep a NotebookLM project current without re-uploading files

Use this when a project keeps changing. Put the live Google Docs, Sheets, or Slides files in one NotebookLM notebook, then ask questions against the current version instead of re-uploading the same sources again.

What changed

Google is rolling out automatic Google Drive syncing for NotebookLM. The Workspace Updates post says Google Docs, Sheets, and Slides sources in NotebookLM will update as the original Drive files change.

This starts rolling out on May 26, 2026, with up to 15 days for feature visibility. Google says it is available to all Google Workspace customers and personal Google accounts with access to NotebookLM.

Google Workspace Updates: automatic Drive syncing in NotebookLM

The useful first try

Make one notebook for a living project: a client handoff, class, trip plan, budget, policy update, or hiring search.

Add only the current source files. A project brief, meeting notes doc, timeline sheet, and slide deck are enough for a good test. The win is simple: when someone edits the source file in Drive, your notebook should stop drifting behind the work.

Use this question

After you add the sources, ask NotebookLM: "Using only these sources, summarize the current state of this project. List the next decisions, open questions, and any details that conflict across the files. Cite the source for each point."

That last line matters. You are using NotebookLM to find and organize the answer, not to invent the answer.

One simple guardrail

Keep private or sensitive files out unless your account, school, or company already allows that use. Google says NotebookLM will respect Drive deletions and permissions, but you should still start with a low-risk project before adding payroll, legal, health, or customer-confidential material.

Also remove stale duplicates from the notebook. If the same policy, budget, or deck appears twice, the old version can still confuse the answer.

How to use it

Open NotebookLM.
Create a new notebook for one active project.
Add sources from Google Drive, starting with Google Docs, Sheets, or Slides that change often.
Ask for a current-state summary with source citations.
Update one of the original Drive files later.
Return to the notebook and ask the same question again.
Check the citations before you reuse the summary in an email, plan, or meeting note.

What to do today

Pick one project where the files change at least once a week.
Move the current files into one clean Drive folder, or at least rename them clearly.
Create a NotebookLM notebook and add only those current files.
Ask for the next decisions and open questions.
Save the answer only after checking the cited files.
If you do not see automatic syncing yet, wait for the rollout or manually refresh the source until it appears.

Official links

Iris