Let the MC guide you (that's what I'm doing in my own sitch). That's his/her job, and, if (s)he is any good at all, she'll let you both talk, and she'll guide you as to content. You of course can always say you don't want to talk about something if it doesn't suit you. Good luck!
Me: 46 W: 44 Married: 17 Together 21 D13; S10 BD: 03.03.15 (Not attracted to you) Almost 2 years trying, alone, to save marriage Status now: Divorced (effective 06.13.17)