I also think act 3 will end soon. Most of the SN are injured.
Zoro is heavily injured...Think Luffy Will be heavily injured and even though he got his haki back, his stamina would have taken a great hit due to G4....
Law, Kidd and Killer couldn't do much damage to Kaido so far...They may get a chapter to shine and then it may be curtains. Kaido defeats all the supernova. Most of the alliance gets defeated as well.... Onigashima lands onto Flower Capital. SHs and SN somehow escape and train to fight Kaido again....My headcanon lol