Horizontal spacing for a few measures

[JxStarks]

I'm transcribing some hymns for use in my church (because I can make the text larger), and I've noticed a problem. I like to make the introduction as \tiny notes, then change to \normalsize for the body of the hymn. When I first complete the transcription, the \tiny notes are compacted nicely, and the hymn fits on one page. (See Example-1) If I transpose the hymn, the \tiny notes become full-sized measures, and the hymn pushes one line onto the next page. (See Example-2).

Is there a way to force a compact horizontal spacing for the first 2 or 3 measures, then have standard spacing for the rest of the music?

Here is my coding:

\version "2.22.1"

\header {
 }

global = {
  \key ees \major
  \time 4/4
  \tempo 4=106
  \partial 4
}

sopr = \transpose ees c {
  \relative c'' {
  \global
  \dynamicUp
  s4 | s1 | s2. ees,8( f) | g4 bes g f | ees2. f8( g) | aes4 c bes g | f2. c'4 |
  bes g g f8( ees) |
  }
}

alto = \transpose ees c {
  \relative c' {
  \global
  \dynamicUp
  \tiny bes4 | ees8 f <g ees>4 <bes ees,> << { \tiny f8 g } \\ { \tiny d4 } >> | ees2. \normalsize ees4 |
  ees4 ees ees d | ees2. f8 e | f4 f f ees | d2. d4 | ees ees d c |
  }
}
 
  bass = \transpose ees c {
    \relative c {
  \global
  \dynamicUp
  \tiny <aes' d,>4 | << { \tiny g8 aes bes4 bes aes8( bes) } \\ { \tiny ees,4 ees g,8 aes bes4 } >> |
  <g' ees>2. \normalsize << { g8 aes } \\ { ees4 } >> |
  <bes' ees,>4 <bes g,> <bes bes,> <aes bes,> | <g c,>2. << { c4 } \\ { aes8 g } >> |
  <c f,>4 <aes ees> <f d> << { g8 aes } \\ { ees4 } >> | <bes' bes,>2. <bes aes>4 |
  <g b,> <g g,> <g c,> <aes d,> |
  }
}
  \score {
  <<
    \new Staff <<
      \new Voice = mel { \voiceOne \sopr }
      \new Voice = alt { \voiceTwo \alto }
    >>
    \new Lyrics \lyricsto mel { \set stanza = "1. " \override LyricText font-size =3
         This is my Fa -- ther's world, and to my lis -- t'ning ears all na -- ture sings and
    }      
    \new Staff \with {
      \clef bass }
    \bass
  >>
  \layout { }
  \midi { }
}

Thanks for any suggestions.

Jerry

Example-1.jpg
Description: JPEG image

Example-2.jpg
Description: JPEG image