You tell me,

that dreams will no longer linger;

that it feels like two states - one trying to hold on, but weaker and weaker, and one taking over, slowly, effortlessly;

that the two states struggle - or rather quiver - against each other like flexible, parallel plates that complement and yet exclude each other;

that the desire and urge to keep your eyes closed is reduced;

that a floor panel slowly comes into view.

You say it appears vertical.