The Buddha’s responses when asked about concentration are consistent. Multiple discourses echo almost the exact same lines.
When he repeats himself — like when he talked about mindfulness (explained here) — it is not to bore us.
It’s to say: this is so important, there is simply no other way I should be expressing it.
There are steps to be taken if you want the genuine, lasting focus recommended by the Buddha (which the Dalai Lama once said would endure until the day you die).