How to slow down AnimateScrollToItem in Jetpack Compose?

I have a lazy list that I am animating scroll to Item when clicking on a button.

onClick = {
  scope.launch  {
    lazyListState.animateScrollToItem(selectedIndex)
  }
}

Why is it that the animateScrollToItem is SO fast? Can I slow it down a little? I am not seeing anywhere I can add a animationSpec, and with animateScrollBy() I would need to pass in a float rather than an index - which I do not want.