Showing my friend Deltarune for the first time

Whats up Ramb heads?

I posted on the Undertale subreddit asking questions about how I should show my friend Undertale and he's almost done with the full game, and Deltarune's next. I was wondering what you guys think is the best approach when it comes to the normal route/weird route order. I'm torn between showing him the Weird Route right after Chapter 2, going chapter by chapter and letting him do 1-5, maybe see what he thinks the forbidden path entails from the references in Chapter 3, and then doing a Weird Route playthrough 1-5.

What do you guys think?