Aligning 6/8 and 2/4

I’m working a piece where half of the orchestra stays in 6/8, while the other half switches to 2/4. It is written this way to avoid duples. Does anyone know how to make the measures line up?

There are multiple posts on this.

I remember that I followed the steps demonstrated in an article from ScoringNotes.

Here is the link to the article for polymeters: