Zero
Leonel actually wasn't sure if the golden scaled koi fish would be able to do this. While it had shown a great amount of talent in siphoning and parsing Force, not only was this world far stronger than any it had experienced before, but it was also filled with a Force that Leonel wasn't sure the koi fish would be able to deal with.
It was because of these reasons that Leonel had hesitated to take this risk before, but now he felt like he had little choice. While he, himself, was doing fine and could continue without pause for at least a few more days, those that followed him weren't doing nearly as well.
They had already used the last sliver of their Force to power the beast skin armor. And, while the function of the fog armor allowed them to slowly replenish themselves over time, the issue was that the process was slow, especially when they had to immediately use whatever headway they made to fight the beasts that were surrounding them from all sides.