Prevent RNFirebase requesting notification permissions until button pressed

I'm using Firebase with FCM for React Native. I have a set of onboarding screens. Half way through it explains why we need to send notifications and should then show the alert that requests the permissions.

However, it seems that just including the line [RNFirebaseNotifications configure]; in my AppDelegate.m makes it do it on installation of the app. I imagine though that removing this will just entirely stop Firebase Messaging from working!

How do I make it only request the permissions when I want it to, with firebase.messaging().requestPermission();?

Here is my AppDelegate.m

#import "AppDelegate.h"

#import <React/RCTBridge.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>
#if RCT_DEV
  #import <React/RCTDevLoadingView.h>
#endif

#import <CodePush/CodePush.h>
#import "RNSplashScreen.h"
#import "RNFirebaseNotifications.h"
#import "RNFirebaseMessaging.h"

#import <AppCenterReactNative.h>
#import <AppCenterReactNativeAnalytics.h>
#import <AppCenterReactNativeCrashes.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
  #if RCT_DEV
    [bridge moduleForClass:[RCTDevLoadingView class]];
  #endif
  RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
                                                   moduleName:@"foobar"
                                            initialProperties:nil];

  rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];
  // Instantiate and configure Firebase.
  [FIRApp configure];
  // Configure the Firebase react-native notifications.
  [RNFirebaseNotifications configure];

  // Register Microsoft App Center.
  [AppCenterReactNative register];
  [AppCenterReactNativeAnalytics registerWithInitiallyEnabled:true];
  [AppCenterReactNativeCrashes registerWithAutomaticProcessing];

  if ([UNUserNotificationCenter class] != nil) {
    // iOS 10 or later
    // For iOS 10 display notification (sent via APNS)
    [UNUserNotificationCenter currentNotificationCenter].delegate = self;
    UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert |
      UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
    [[UNUserNotificationCenter currentNotificationCenter]
      requestAuthorizationWithOptions:authOptions
      completionHandler:^(BOOL granted, NSError * _Nullable error) {
          // ...
      }];
  }
  else {
    // iOS 10 notifications aren't available; fall back to iOS 8-9 notifications.
    UIUserNotificationType allNotificationTypes =
    (UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
    UIUserNotificationSettings *settings =
    [UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
    [application registerUserNotificationSettings:settings];
  }

  [application registerForRemoteNotifications];

  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  UIViewController *rootViewController = [UIViewController new];
  rootViewController.view = rootView;
  self.window.rootViewController = rootViewController;
  [self.window makeKeyAndVisible];
  [RNSplashScreen show];
  return YES;
}

- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
{
#if DEBUG
  return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
#else
  return [CodePush bundleURL];
#endif
}

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
  [[RNFirebaseNotifications instance] didReceiveLocalNotification:notification];
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(nonnull NSDictionary *)userInfo
fetchCompletionHandler:(nonnull void (^)(UIBackgroundFetchResult))completionHandler
{
  [[RNFirebaseNotifications instance] didReceiveRemoteNotification:userInfo fetchCompletionHandler:completionHandler];
}

- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
{
  [[RNFirebaseMessaging instance] didRegisterUserNotificationSettings:notificationSettings];
}

-(void) userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler
{
  [[RNFirebaseMessaging instance] didReceiveRemoteNotification:response.notification.request.content.userInfo];
  completionHandler();
}

@end

Thanks in advance.