The convention suggests when you are somewhere around the point of Retirement, you should think about and execute “planning your Retirement Income”.
This is a great example where language and how something is described (in terms of words or a title) can be unhelpful.
Retirement Income Planning is a straightforward, uncomplicated exercise. However, that is not what most people in this position need.
They need to work out how to accumulate, which is a completely different thing.
And decumulation is complex, quite unlike anything you will have dealt with before.