What is the most optimal way to import Letterboxd lists into Trakt?

I'm currently using Kodi and it does support Trakt but not Letterboxd and I would really like to use Letterboxd as a main hub for movies since all my lists with friends are over there.

There is an official way of doing it that involves exporting a zip file from Letterboxd and then importing it in Trakt but it only transfers the Watchlist and History, sadly not Lists.

I came across a lot of folks saying Trakt and Letterboxd can be synced together including lists and found some scripts but haven't found quite the one.

Anyway, I'm still new to Trakt and any advice will be appreciated!