Change urlbase of HttpClient in Xamarin.Forms using Dependency Injection pattern

Question

I'm developing an application with Xamarin.Forms for UWP and Android. Using the Dependency Injection pattern (DI), I register a service of HttpClient to manage connections with one back-end with configurable IP address in the app. In App.xaml.cs:

public App() {
        InitializeComponent();
        DependencyService.Register<System.Net.Http.HttpClient>();
        MainPage = new NavigationPage(new LoginPage());
}

In login page, I have a "Entry" component to edit the URL of my backend, due to my development requirements. In the LoginPage ViewModel, I get the service with

public HttpClient Http => DependencyService.Get<HttpClient>();

And them, I set the url base which the user introduces on the "Entry"

public async Task LoginMethod() {
      Http.BaseAddress = new Uri(TheIntroducedIP);
      /*Navigate to next pages and make some requests*/
}

This works, but the problem is if I come back to this LoginPage after doing some requests with HttpClient injected service and try to set the UrlBase again it throws an Exception:

System.InvalidOperationException: 'This instance has already started one or more requests. Properties can only be modified before sending the first request.'

Is there any way or different approach to reinject/restart the service so I can remap the urlbase?

Note: I wanted to keep using DI, avoiding creating different instances of HttpClient for each call using "using". In addition, I wanted to use the UrlBase property instead of entering the full path in each request.