Reducing space between lyric lines

[Br. Gabriel-Marie | SSPX]

So, I'm trying to force my music onto one page.  If I can reduce the space between lyric lines then I might be able to get it.

I've been playing with this override:

\layout{
        \context {
            \Lyrics
                 \override VerticalAxisGroup #'minimum-Y-extent = #'(1 . 1.8)
}}

But it doesn't seem to have any effect.