Flutter | Local Notification : ZonedSchedule only firing once - flutter

Question

I am trying to setup Local Notifications in Flutter app and need the notifications to fire once daily and the notification text to be read from SQLite.
For testing I am trying to have to run these every 2 minutes to see if it picks up the data from SQLite correctly, however it seems to run only once...
await flutterLocalNotificationsPlugin.zonedSchedule(
notificationID,
"Dynamic Data",
await getData(),
_nextInstanceOfTime(initialHour,initialMin),// have defined an initial hr and min to start the notification
const NotificationDetails(
android: AndroidNotificationDetails('1', 'test', 'test')),
androidAllowWhileIdle: true,
uiLocalNotificationDateInterpretation:
UILocalNotificationDateInterpretation.absoluteTime,
matchDateTimeComponents: DateTimeComponents.time
);
tz.TZDateTime _nextInstanceOfTime(int hour, int minutes) {
Duration offsetTime= DateTime.now().timeZoneOffset;
tz.TZDateTime scheduledDate;
tz.TZDateTime currentTime;
if (offsetTime.isNegative) {
scheduledDate = tz.TZDateTime.local(DateTime.now().year,DateTime.now().month,DateTime.now().day,hour,minutes)
.add(offsetTime);
currentTime = tz.TZDateTime.local(DateTime.now().year,DateTime.now().month,DateTime.now().day,DateTime.now().hour,DateTime.now().minute)
.add(offsetTime);
}
else {
scheduledDate = tz.TZDateTime.local(DateTime.now().year,DateTime.now().month,DateTime.now().day,hour,minutes)
.subtract(offsetTime);
currentTime = tz.TZDateTime.local(DateTime.now().year,DateTime.now().month,DateTime.now().day,DateTime.now().hour,DateTime.now().minute)
.subtract(offsetTime);
}
if (scheduledDate.isBefore(currentTime)) {
scheduledDate = scheduledDate.add(const Duration(days: 1));
}
scheduledDate = scheduledDate.add(const Duration(minutes: 2));//->>> WANTING TO TEST FIRING IT EVERY 2 MINS
print("next notification:$scheduledDate"); // ->> THIS PRINTS ONLY ONCE
return scheduledDate;
}
getData() gets the random String from SQlite
The print("next notification:$scheduledDate") prints only once and not after every 2 minutes as I need.
Please help !!
Thanks