An adjective appearing as ᴱQ. Qîva “awake” in the Gnomish Lexicon of the 1910s derived from the early root ᴱ√QIV; Tolkien noted it was sometimes confused with ᴱQ. koiva “lively, living” (GL/29).
Neo-Quenya: I would adapt this word as ᴺQ. cuiva “awake” using the later root √KUY.
A word appearing as ᴱQ. koiva “awake” in the Qenya Lexicon of the 1910s under the early root ᴱ√KOẎO “have life” (QL/48), but in the contemporaneous Gnomish Lexicon it was glossed “lively, living” (GL/29).
Neo-Quenya: I’d retain this word as ᴺQ. coiva “lively” for purposes of Neo-Quenya, since I use √KOY as the root of words having to do with life. For “awake” I’d use ᴺQ. cuiva, and for “living” I’d use Q. coirëa.