Can’t beat Emma and Isshin Ashina on ng+

Isshin in shura ending is impossible in ng+ I have maxed out health and he almost two shots me. His parry windows seem different because when I parry him it doesn’t work. Also his posture doesn’t go up at all. Isshin sword saint was easier and a better fight. Also Emma’s grab is almost inescapable and her moves aren’t even telegraphed properly. She has to be the worst fight I’ve fought in the game for me. I’m really trying to platinum this game but this might make me quit. I’m already satisfied with beating the game but the platinum would be cool since I’m like 5 trophies away. Can anyone please help me?

EDIT: I did it!!!