What's wrong with waiting until the session and confronting your husband's lying, minimizing, or wanting to rugsweep?
If you perceive a lie, why not just say, 'I see that differently' or 'I experienced that differently'? Or even, 'That's a lie!'
IMO, if you don't feel safe enough to do that with this MC, you need a different MC - or a different solution altogether.
Sorry you have to wait so long, but that could have a benefit to you - you can pin down what you want out of MC bring it up early, and thereby save some thrashing around.