How do I loop through pages and wait for a return value

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C#

Hello, I am doing a project where I need to load a JSON file and it will read the JSON file and in it, there is a String List.

While looping through the List, I need to call their specific pages and wait for it to complete before going to the next page on the List. But every time I do so, the camera page will override the signature page.

If my JSON List is "Signature", "QR", "Camera", it will go in sequence. So "Signature" will be called first then "QR" then "Camera". But "QR" will bring up the camera and it overrides the "Signature" page. How do I fix that?

<pre>Private async Task readJson()
        {
            Config config = JsonConvert.DeserializeObject<Config>(json);

            while (config.Steps.Any())
            { 
                var item = config.Steps.First();

                if (item.Equals("Camera"))
                {
                    Console.WriteLine("Camera");
                    BindingContext = new CapturePhotoVM();
                    await (BindingContext as CapturePhotoVM).TakePicture();

                   
                }
                else if (item.Equals("Signature"))
                {
                    Console.WriteLine("Signature");

                    //var navPage = new NavigationPage(this);
                    await Application.Current.MainPage.Navigation.PushModalAsync(new SignaturePage());

                    //await navPage.PushAsync(new SignaturePage());

                }
                else if (item.Equals("QR"))
                {
                    Console.WriteLine("QR");

                    var navPage = new NavigationPage(this);
                    //Application.Current.MainPage = navPage;

                    await navPage.PushAsync(new ScannerPage());
                }

                config.Steps.Remove(item);

            }

What I have tried:

I tried using PushModalAsync but still can't get it to work.