Hello sjc55, I'm not a teacher, but I hope my advice helps!
"It's time that we broke with traditional beliefs."
The word "it's" is present tense. You should say: "It is time that we break away from traditional beliefs." Do not use the past form of "break," which is "broke"; instead, always keep your sentences one tense (however, there are few cases where you must use two different tenses in one sentence).
I hope this helps!