How to load starting state data for a StateNotifierProvider from Firestore?

[davoutuk]

Is there a recommended best practice pattern for loading the starting state data for a StateNotifierProvider from Firestore?

In my app I'm trying to use the following, but is this the best course of action?

final userPreferencesFutureProvider = FutureProvider<bool>( (ref) async {
  // get service that wraps calls to Firestore
  final p = ref.watch(userPrefsServiceProvider);
  // load data from Firestore
  GdUserPreferences? aPrefs = await p.load();
  // if none found then create default values
  if (aPrefs == null) {
    aPrefs =  GdUserPreferencesUtil.createDefault();
  }
  // push state into a provider that will be used
  ref.read(userPreferencesProvider.notifier).update(aPrefs);
  // this future returns a boolean as a way of indicating that the data load succeeded.
  // elsewhere in the app access to the user preference data is via the userPreferencesProvider
  return true;
});

final userPreferencesProvider = StateNotifierProvider<UserPreferencesNotifier,GdUserPreferences>((ref) {
  return UserPreferencesNotifier(ref.watch(userPrefsServiceProvider),GdUserPreferences());
});

class UserPreferencesNotifier extends StateNotifier<GdUserPreferences> {
  // service is a wrapper around FireStore collection call
  final GdUserPreferencesService service;
  
  UserPreferencesNotifier(this.service, super.state);

  void update(GdUserPreferences aNewPrefs) {
    state = aNewPrefs;
  }
}

Any suggestions?