Here is an alternative for prazi resistant flukes. I read from Humblefish is will almost certainly take them out.
Fenbendazole (dewormer) - (updated 5-6-2023) What It Treats: Flukes (Monogeneans) and intestinal worms. Fenbendazole is particularly useful to treat flukes & intestinal worms which seem resistant to praziquantel. How To Treat: Fenbendazole is a drug often prescribed by veterinarians to treat...
humble.fish
@Jay Hemdal Humblefish has an article on using Fenbendazole for prazi resistant flukes (link above). Do you have any experience with this medication?
You are supposed to follow dosage instructions as a timed bath treatment, then move fish into a sterile QT. Follow treatment 6 days later.