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Other than stopping of the internal dialogue, concentration exercises help to develop attention and awareness. Or the Power Walk (sry if called in a wrong way, not English) for its peripheral vision - and for stopping the internal dialogue, too, of course Any tricks with vision help. Gazing helps. Not-doing.
Also as I understand you have to do your first recapitulation before the start of your dreaming practice, in order to get energy to stop the internal dialogue and do other things meantioned.