Display order in CollectionView in Xamarin Form

Question

I want to display my collectionview in the below format:

Item0 Item3
Item1 Item4
Item2 Item5

But by default coillectionView displays in the below format:

Item0 Item1
Item2 Item3
Item4 Item5

                                <CollectionView.ItemsLayout>
                                <GridItemsLayout Orientation="Vertical" Span="2" />
                            </CollectionView.ItemsLayout>

Using the above code to display items in 2 columns