Are you doing it before bed? Wild is all about timing, so you need to time very well to interrupt a rem cycle or do it just before it's beginning. And the general problem i see, is that you're concentrating wayyy to much, Wild is all about being passive. Wild is about falling asleep with a thread of conciousness with you, how are you gonna fall asleep if you're constantly worrying about your body position, breathing and counting. It's just not possible so try this.

Wake up 4,5,6 hours into sleep, wake up for a good 10-15 minutes clear your head and go back to bed. Get as comfortable as possible, you will still be sleepy so that's good you'll just have to try to not fall asleep and you'll enter some sort of trance were you will get some day dreams and hypnogogia, that's good soon after when you least expect it you will be in SP the calmer you are the easier it is to transition.

Hope this helped and good luck.