How to Limit WhatsApp Messages Per Number in n8n to a LLM?

I’m trying to set up an automation using n8n, and I need some help with WhatsApp integration. Specifically, I want to limit the number of messages sent per WhatsApp number (or ID)

My goal is to track the number of messages sent from each number and ensure that after a certain limit is reached, send a specific message (e.g., "You’ve run out of messages.") to the user.

Has anyone set this up before or have suggestions on how to achieve this using n8n?

Appreciate any guidance you can provide