So Kaido doesn't say anything at the end, not sure why that was mentioned. That's all Yamato saying the island is falling.
The fight is certainly nearing its end, another 2-3 chapters at most if it's not interrupted by other scenes or flashbacks (though you have Orochi's state and even Denjiro still MIA lol).
Hopefully, HOPEFULLY Kaido has a decent trump card. Regardless, the fight should be a good ass struggle to the end.