How to re-bind to a running service?

Question

My service is a 3-hour timer that should run in the background until the time is finished (even if the user exits the app).

I have successfully created and bound my service with a fragment. This enables me to show the timer in real time to the user.

When I exit the app the service continues properly and even sends a notification to the user once the timer is complete (Even if the app is not open)

My problem is this: When the user closes the app and then re-opens it before the timer is finished, I am unable to retrieve the reference to that running service...

Here is my code to create and bind the service

private ServiceConnection connection = new ServiceConnection(){
    @Override
    public void onServiceConnected(ComponentName componentName, IBinder 
                                   binder){
        TimerService.TimerBinder binderTime
         = (TimerService.TimerBinder) binder;
        Funx.getInstance().setTimerService(binderTime.getOgBinder());
        bound = true;
    }

    @Override
    public void onServiceDisconnected(ComponentName componentName){
        bound = false;
    }
};

@Override
public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);

    Intent intent = new Intent(getContext(), TimerService.class);
    Objects.requireNonNull(getContext()).bindService(intent, connection, 
    Context.BIND_AUTO_CREATE);
}

 @Override
    public void onDestroy(){
    super.onDestroy();
    if (bound){
        Objects.requireNonNull(getActivity()).unbindService(connection);
        bound = false;
    }
 }