How and where should I fetch Image from image path

I've very basic retrofit implementation:

public interface MoviesApi {
    @GET(Constants.POPULAR_MOVIES_URL)
    Call<AllMovies> getAllMovies(
            @Query("api_key") String apiKey
    );
}

ViewModel:

Call<AllMovies> call = RetrofitService.getAllMovies().getAllMovies(Constants.API_KEY);

        call.enqueue(new Callback<AllMovies>() {
            @Override
            public void onResponse(Call<AllMovies> call, Response<AllMovies> response) {
                staus.setValue(Status.SUCCESS);
                Log.i(TAG, "onResponse: " + response.body());
                _allMovies.setValue(response.body());
            }

            @Override
            public void onFailure(Call<AllMovies> call, Throwable t) {
                Log.i(TAG, "onResponse: " + t.getMessage());

            }
        });

And I'm using it inside my recyclerView:

  String currentUrl = "https://images-na.ssl-images-amazon.com/images/I/518jo3Xlf8L._AC_.jpg";

        holder.title_text.setText(movieItem.getTitle());

        Glide.with(holder.itemView.getContext())
                .load(currentUrl)
                .apply(new RequestOptions().override(400, 600))
                .into(holder.imageView);
    }

Nothing speical here.

My response contain this field:

  "poster_path": "/e1mjopzAS2KNsvpbpahQ1a6SkSn.jpg"

that I should fetch from here:

https://image.tmdb.org/t/p

My question is - where should I fetch this image?

Should I create new image field in my movie model, and immediately after I call getAllMovies I should call getPoster for example and then insert the data to the image field I created?

Or just fetch directly from glide is enough?

It's worth to mention that I need to pass this image to other screen, when I click on recyclerView item for example

Should I create 2 retrofit instances for 2 base url(image and movies has different base url)?

Reference for tmdb image docs: https://developers.themoviedb.org/3/getting-started/images