I have been getting this same problem. It feels like I'm right there on the edge of a dream and I get this falling sensation, but then I think I just get too excited because it starts to slowly fade away. I'm sure that I'm not just going into a dream because I usually do a RC after this sensation disappears. Anyone know how I can get past this feeling and into the dream? Is it just a matter of calming myself down once I start feeling vibrations?