Neon as a Postgres follower replica

Hi, I’d like to introduce Neon at my workplace. However there is no-way that we replace our production Postgres instance in the short-term.
The easiest way to begin would be to keep our Postgres instance, and just add a Neon follower/replica. We could then build our new use-cases on the Neon follower.

I couldn’t find how to do that in docs. Would that be possible?

Thanks!