NestedScrollView + CoodinatorLayout scrollBy() scrollTo() methods do nothing

I have a NestedScrollView being used with CoordinatorLayout + AppBarLayout + CollapsingToolbarLayout with parallax effect similar to this tutorial

I need to scroll the content programmatically (preferably a smooth scroll, i.e. animated), however calling the scroll methods (scrollBy(), scrollTo(), smoothScrollTo(), smoothScrollBy()) do nothing.

Note that I am using app:layout_behavior="@string/appbar_scrolling_view_behavior" <-- Not sure if the issue is related to this.

I'm calling nsv_form.smoothScrollBy(0, 300) in Kotlin when a button is clicked by the user, but nothing happens :(

(Also tried scrollTo(), scrollBy(), +- 300, all sorts of different variations)

UPDATE: I dug into source code and it seems like the *scroll*() methods expect the content of the layout to be larger than the parent view (makes sense). In my case, the content is smaller, so I suspect that's why the scrolling methods do not work. Perhaps I need something different instead of scroll?

The NestedScrollView's position starts partially off the screen with an image above it in a CollapsingToolbarLayout, like this, so it seems like I need to programmatically move the position of the NestedScrollView AND trigger the CoordinatorLayout's scrolling behavior. -- How do I do this?

Here's my layout:

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/transparent">

        <com.google.android.material.appbar.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:expandedTitleMarginEnd="64dp"
            app:expandedTitleMarginStart="48dp"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:id="@+id/iv_image"
                android:layout_width="match_parent"
                android:layout_height="@dimen/image_height"
                android:scaleType="centerCrop"
                app:layout_collapseMode="parallax"
                tools:src="@drawable/some_image" />

        </com.google.android.material.appbar.CollapsingToolbarLayout>

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.core.widget.NestedScrollView
        android:id="@+id/nsv_form"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:animateLayoutChanges="true"
            android:orientation="vertical">

            [... child views...]

        </LinearLayout>

    </androidx.core.widget.NestedScrollView>    
</androidx.coordinatorlayout.widget.CoordinatorLayout>

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