Weird Sensation Before Falling Asleep

[dip]

Before falling asleep:
SWIM says his lips, tongue, and nose feel very “far away.” Especially the mouth, feels insignificant, about ten times smaller. Feeling the roof of his mouth (with his tongue), it feels spacey, stretched and simultaneously: distant, minor in size. His entire body feels detached, floating in a relaxed state. His mind is dreamy, nearly asleep, but can have full conscious memory of this experience. He says it feels like the dissociative feeling of DXM.
Is this an out of body experience? SWIM’s face seems ahead of him, while his body feels like it is falling; a slight physical pressure.
Not sure how often this occurs, most likely it's usually forgotten. Before SWIM goes to sleep, if he focuses and relaxes at the same time, he can consciously fly around in this dissociated, dreamy state.

Is this making sense? Has anyone felt anything like this before? *While completely sober.
Or … is this just an increase in DMT before one falls asleep?