Nicola, This sounds like great progress. You have gotten some really great advice from BND and ISLH. Some that I will take myself :)if you don't mind. Funny, having been in MLC myself I can say that time almost stands still while you are in MLC. Once you come out, it is like hail is falling all around you so for your H, he probably is going through a lot of different emotions. The best thing though is that he is talking to Y-O-U. Be compassionate but not a rug because he may flip flop a bit back to that old MLC way... this is going to take some more time and it is excellent that he has signed up for counseling.
As for you, continue GALing.You will need some distractions for those moments when he is rocky and also so that you do not seem as needy to him as you may have appeared to be. Remember, his recollections of days past will be foggy and sometimes more focused on what he did not like versus what was good.
I am proud of you and you are handling this just fine ... good luck and most of all GODSPEED.