I haven't read your other thread, but some reality checks tend to work less frequently than others. The physical ones such as the finger-through-palm, or finger-counting RCs have a tendency to be less successful than the nose-plug RC, because it's very difficult to emulate the sensation of blocked airways. This may be because in real life, you're still breathing normally. I'd highly recommend you try out the nose-plug if you haven't yet, and as for the others, really expect a dream-like outcome when you do them. Truly expect for your finger to go through your palm, for instance, visualizing it as well as you can.