Convert highlights (.han to .azw3r)

I’d like to convert notes and highlights from an .han file to an .azw3r file. Is that possible?

Context:

On my Kindle Keyboard, I have lots of sideloaded books in .azw3, with notes and highlights in .han files (correct me if I’m wrong).

I want to convert these notes and highlights so I can see them on my Kindle Paperwhite (11th gen.), which uses .azw3r.

So I thought about converting .han to .azw3r. But of course any other way to achieve what I want would make me happy.

Thanks in advance.