My answer would be, it's never too early to plan for anything. Some or most people plan their whole life but still don't plan after they are gone and the impact it leaves on our loved ones. Some know that this burden is emotionally and financially draining. There are certain circumstances that for one reason or another other than natural causes leads to our own demise. This is why it's always a good decision to speak with the ones you love about how you with to be remembered.
Making arrangements in advance of need is a loving and financially a wise choice. Planning provides family reassurance, comfort and piece of mind.