Hey Xeroer, I'm just past what your at (hearing sounds (a bit) seeing imagery).
The main problem I find is that I started thinking about how far I was getting into the WILD which pushed up my brain activity which isnt a good thing. Also this takes your concentration off your counting and/ or focus.

Just try to relax more and let your mind wander when it wants to because that can help push you further in the WILD.

Dunno if that helps.