Generally with the properties of an object if you use the object property in an assignment of a variable it returns teh current state. I would say to use the same object where you turn change tracking off to plug into a temporary variable the value when you start.
Then the last thing you should do (or one of them) is to set the tracking “object” to the value of the variable.
I’m not familiar with programatically turning change tracking on and off in Word but it would look something like this:
TrackingState = objWord.document.trackchanges
objWord.document.trackchanges = False ‘this is the command you already have to turn the tracking off