What Does Sleepify Mean?

Vulfpeck's latest album Sleepify is a completely silent recording composed of tracks that are each a half-minute in length. (Users must listen to a song for at least 30 seconds before Spotify counts it as a proper "play.")

Is Sleepful a word?

(archaic) Strongly inclined to sleep; very sleepy.

What is a sleepy person called?

dozy, drowsy, slumberous. (or slumbrous), somnolent.