How to get notified when timer value doesnt change?

I have a timer in my BattleRoyale game at the end of which, I reset the game and start again.
But randomly, My timer just stops and doesnt keep reducing as it should.

Im using he battleroyale timer method given by roblox itself in this link

I want to send a slack notification when the timer stops so that I can atleast restart the server to make the game work.

Is there any way to know when a timer value doesnt change? Is a continuous while loop the only way to monitor the timer value?

You could do a normal value and detect a change with .Changed function

This will tell if the value changed. I want to know when the value is not changing, when the timer has stopped