proxy provider is not updating value

I am using provider package for state management system...I am trying to update value using proxy provider but my value is updating after calling api but I wanted to to update value before api call following is my main.dart where I am using proxy provider and trying to get value from change notifier

void main() {
  Provider.debugCheckInvalidValueType = null;
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    //  final auth = Auth();
    return MultiProvider(
      providers: [
        ChangeNotifierProvider(
          create: (_) => Auth(),
        ),
        ProxyProvider<Auth, ApiCalls>(
            //create: (_) => ApiCalls(),
            update: (_, auth, __) => ApiCalls(auth.token)),
        //ApiCalls(auth.token)),
        ChangeNotifierProvider(
          create: (_) => FlutterFunctions(),
        ),
     
      ],
      child: Consumer<Auth>(
        builder: (context, value, _) {
          return MaterialApp(
              title: 'Flutter Demo',
              theme: ThemeData(
                primarySwatch: Colors.red,
              ),
              home: value.isAuth
                  ? const AdminScreen()
                  : FutureBuilder(
                      future: value.tryAutoLogin(),
                      builder: (context, snapshot) =>
                          snapshot.connectionState == ConnectionState.waiting
                              ? CircularProgressIndicator()
                              : const AdminLoginScreen(),
  

following is my Auth class with change notifier where I am updating value

class Auth extends ChangeNotifier {

  String? accessToken;
  DateTime? accessTokenExpiryDate;
  String? get token {
    if (accessTokenExpiryDate != null &&
        accessTokenExpiryDate!.isAfter(DateTime.now()) &&
        accessToken != null) {
      return accessToken;
    } else if (accessTokenExpiryDate!.isBefore(DateTime.now())) {
      return accessToken;
    }
    return null;
  }


  Future<void> restoreAccessToken() async {
    print('restoreAccessToken started');

    //print(token);
    final url = '${Ninecabsapi().urlHost}${Ninecabsapi().login}/$sessionId';

    var response = await http.patch(
      Uri.parse(url),
      headers: {
        'Content-Type': 'application/json; charset=UTF-8',
        'Authorization': accessToken!
      },
      body: json.encode(
        {"refresh_token": refreshtoken},
      ),
    );
    var userDetails = json.decode(response.body);

    if (response.statusCode == 401) {
      print(userDetails['messages']);
    }

    sessionId = userDetails['data']['session_id'];
    accessToken = userDetails['data']['access_token'];
    accessTokenExpiryDate = DateTime.now().add(
      Duration(seconds: userDetails['data']['access_token_expiry']),
    );
    refreshToken = userDetails['data']['refresh_token'];
    refreshTokenExpiryDate = DateTime.now().add(
      Duration(seconds: userDetails['data']['refresh_token_expiry']),
    );
    final userData = json.encode({
      'sessionId': sessionId,
      'refreshToken': refreshToken,
      'refreshExpiry': refreshTokenExpiryDate!.toIso8601String(),
      'accessToken': accessToken,
      'accessTokenExpiry': accessTokenExpiryDate!.toIso8601String()
    });
    //print(userDetails);

    notifyListeners();
    final prefs = await SharedPreferences.getInstance();

    prefs.setString('userData', userData);
    print("this is from restoreAcessToken :$userDetails");
    final extractData =
        json.decode(prefs.getString('userData')!) as Map<String, dynamic>;
    print('restore access token: ${extractData['accessToken']}');
    reset();
  }

following is my ApiCalls class where I want to use updated token when retry

class ApiCalls extends ChangeNotifier {
  final String? token;

  ApiCalls(this.token);


  Future<void> postVehicles(BuildContext context, String vehicleType) async {
    print('postVehicles:$token');
    final prefs = await SharedPreferences.getInstance();
    final extractData =
        json.decode(prefs.getString('userData')!) as Map<String, dynamic>;
    var data = {"vehicletype": vehicleType, "filename": vehicleType};
    Map<String, String> obj = {"attributes": json.encode(data).toString()};

var flutterFunctions =
    Provider.of<FlutterFunctions>(context, listen: false);
final url = Ninecabsapi().urlHost + Ninecabsapi().getvehicle;
try {
  loading();
  var response = http.MultipartRequest("POST", Uri.parse(url))
    ..files.add(await http.MultipartFile.fromPath(
        "imagefile", flutterFunctions.imageFile!.path,
        contentType: MediaType("image", "jpg")))
    //..headers['Authorization'] = token!
    ..fields.addAll(obj);
  final client = RetryClient(
    http.Client(),
    retries: 2,
    when: (response) {
      return response.statusCode == 401 ? true : false;
    },
    onRetry: (req, res, retryCount) async {
      //print('retry started $token');

      if (retryCount == 0 && res?.statusCode == 401) {
        // Only this block can run (once) until done
        await Provider.of<Auth>(context, listen: false)
            .restoreAccessToken();
        req.headers['Authorization'] = token!;
        // extractData['accessToken']
        //token = authProvider.token;
        print('retry started ${extractData['accessToken']}');
        //req.headers.clear();

      }
    },
  );
  final send = await client.send(response);
  final res = await http.Response.fromStream(send);
  
  switch (res.statusCode) {
    case 201:
      Future.delayed(Duration.zero)
          .then((value) => showsnackbar(context, "Vehicle type inserted"));
  }
  var messages = json.decode(res.body);
  print("this is from sample $messages");

  loading();

in following image you can see my token is updated in ui here my token is updated following is the response from the restoreaccesswoken method and you can see I am not Abel to use updated token in headers and I am also printing the token in print statement it is not printing updated token you can see my response here