Hi Baxter, so finally you will have a MC, it is funny how your story is similar to mine with some months delay ! My main advise would be to read again my thread in June-July and the very nice advises I got when I had the MC. IMO, yes you can prepare to the worse, meaning your wife looking back to your marriage with dark glasses and listing everything what you have done wrong. Listen is the best thing to do, if you can take note that could be useful. One thing that I know in hindsight : when I recognize W is blaming me for something I did not do or rewriting the past, it is projection, she is speaking to herself. That helps me now to not react or defend myself.
"to gently remind her that our M wasn’t as bad as she thinks it was" looks to me not a good idea. By doing so, you may place yourself in an adversarial (or antagonistic ?) position against her, if she thinks your M was the worse ever in the world.
When I had the opportunity to talk about the past, I have chosen to praise and be thankful to my W and it was coming from my heart. MLCers lack self esteem and I have been niggardly with compliments for too long before BD.
Had I blamed W during the MC (speaking about OM, affair, or other hot topics), I am convinced now that W would have raised the topic of separation this day.
Also you can have a look on threads of Alvinthemaker and Readytofixmyself, both male LBS with at-home spouses who had MC, both MC did not bring good results, thanks to them we have the written stories as a reference. Reading their threads helped me to prepare the MC, helped me to shut my mouth, it helps me now to understand that a second session is irrelevant at the moment, thanks God W is not pushing for it.
Edit I am currently reading
a very interesting thread from denjef31, and ex MLCer who became LBS and explains very clearly the fog and the state of mind of a person under MLC. I recommend this thread to you and to all newbies.
M 44, W42. Married 18 years, together 21
3 children D16, D14, S5
OM discovered Dec 22, BD Jan 23 (few days after)
W still living at home
Aimer, c'est donner sans attendre de retour et tout acte est prière, s'il est don de soi (Antoine de Saint Exupéry)
Love means to give without expecting return, and every act is a prayer if it is a selfless gift. (thanks OffRoad !)