Flutter how to trigger exit animation

Question

When I enter the page I animate a container with a Siding animation. And it is triggered trough the provider.

Navigator.push(
      context,
      PageRouteBuilder(
        pageBuilder: (context, animation, animation2) {
          return ListenableProvider(
            create: (context) => animation,
            child: LoginPage(),
          );
        },
        transitionDuration: const Duration(milliseconds: 500),
      ),
    ); 

But now I want to do the same animation but in reverse when I go to the next page. the animation now is only playing if I go back to the last page. I can not find one good explanation how to do this.

I found a suitable solution, so when i navigate to the next page I use Navigator.popAndPushNamed but then before the animations ends the page transition animations begins so it don't has enough time to finish the animation.