Are there anyways to make levonethorphan from DXM

[DXMmybeloved]

Since levonethorphan is one of the metorphans i was wondering if it was possible to convert dextrometorphan into its more opiatly potent brother.
Only info i could find about synthesis of levonethorphan is this erowid post https://www.erowid.org/archive/rhodium/chemistry/levorphanol.html

Also has anybody here tried levonetorphan? I love DXM and i wonder what its brother is like and if they are similar.