'Populate TableView and CollectionView when user is Logged-in

My current program is about mostly TableViews and CollectionViews that fetches data from an API, The problem is that the data is fetched only when the user goes to the current tab which the TableView is present and the data fetches from the moment the user went to the tab and needs to wait till the data come because when user logs-in a token is shared with other classes and used later to fill them.

I don't know how can I make the data filled automatically after the user is logged-in not when the user goes to the specific tab and wait for them to load, Basically make a request when the user loggs-in so he doesn't have to go to the tabs and wait 5+ seconds

signInViewController:

@IBAction func signInSegueToDashboard(_ sender: Any) {
    
    activityLoaderSignIn.startAnimating()
    
    APICallerPOST.shared.signInToAccount(username: emailFieldSignIn.text!, password: passwordFieldSignIn.text!) { [self] (result, error) in
        
        if result?.StatusCode != 0 {
            
            DispatchQueue.main.async {
                
                activityLoaderSignIn.stopAnimating()
            }
        }
        
        
        switch result?.StatusCode {
        case 0:
            
            APICallerGET.shared.token = result?.Result.token
            assignDataFromSignIn.DefaultsKeys.keyOne = (result?.Result.completeName)!
            
            DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
                
                guard let mainTabBarController = self.storyboard?.instantiateViewController(withIdentifier: "mainTabBarController")
                else {
                    return
                }
                
                mainTabBarController.modalPresentationStyle = .custom
                self.present(mainTabBarController, animated: true, completion: nil)
            }
            
        case 1:
            DispatchQueue.main.async {
                
                
            }
        case 2:
            DispatchQueue.main.async {
                
                
            }
        default:
            break
        }
    }
}

invoicesViewController:

// the function which is used at viewDidLoad at a TableView class
 
func fetchAndReloadData(){
    APICallerGET.shared.propertiesOfAccount(for: APICallerGET.shared.token!) { [self] (result, error) in
        
        switch result?.StatusCode {
        case 0:
            
            self.notificationsNew = result!
            self.notifications = self.notificationsNew
            
            DispatchQueue.main.async {
                
                self.invoicesTableView.reloadData()
                activityLoaderInvoices.stopAnimating()
            }
        case 1:
            print("error")
        default:
            break
        }
    }
}

Now if there is a way to load this function of the invoicesViewController straight when the user signs-in so he doesn't have to wait till the data loads when he went to the tab with the TableView.

swift

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'Populate TableView and CollectionView when user is Logged-in

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