Install multiple versions of an info manual

I have GNU Guile 2.2.6 installed on my system as guile, and GNU Guile 3.0.5 installed as guile3. I would like to install the info manuals for both versions. Both want to install the info files as /usr/share/info/guile.info{,-1,-2,..}, so whichever I install last overwrites the manual for the other version. How can I keep both versions? Version 2.2.6 is provided by my package manager, and I'm currently building version 3.0.5 like this:

./configure --prefix=/usr --program-suffix=3
make
sudo make install

Ideally info guile would bring up the documentation for version 2.2.6, while info guile3 would show the docs for version 3.0.5.