I came across this latex template for typesetting parallel texts a little while ago, though I haven’t tried using it yet.
So far for self-published texts I have just settled for a whole language text followed by a the whole English translation, with numbered paragraphs for cross-reference. ᑳᐱᒫᒌᑯᓯᔮᐣᑭᐸᐣ | When we moved: Memories of Mishamikoweesh