I've absolutely no idea why a few seconds of general hypnagogic reverie induced through brief exploration of form constants behind the eyelids shortly before sleep may bring on intense OBEs or lucid dreams, as is the foundation of so-called SSILD.

You sound as if you're starting to stress out over this now so I would recommend a couple of weeks break, spending 30 minutes each night before sleep practising some relaxation and unfocussed visualisation. Give your mind a shake-down and take a short rest.