do I need a heavy weapon to break the eldest brothers sword in the first black rabbit brotherhood fight

lies of p is the first game I ever play on pc and the first black brotherhood fight the first one that has me STRUGGLING so I looked up how to fight him and I saw that you can break his sword. I'm using the trident and whereas I do get enough perfect parries in to make him stagger I never get him to the point where his sword breaks. do I need a heavier weapon for it?