I know the whole eggshells thing and that impasse where the tension builds because you don't know what to say. That's hard because I've been there and I would maybe suggest that you consider talking to him about reading some books together. Read them each on your own but the same books. The thing of it is some guys scoff at that stuff but if they're serious about trying to make it work, then why not ask and see what he says.
I'd ask him to discuss some topics that are of concern with him. Communication Gaps, Needs, whatever and then agree on some books to read and get 2 copies and you each read them. It's cheaper than therapy but it may be too soon to make those suggestions but you have had some tough conversations that take courage for fear of hearing something you don't want to hear.
It's a process. Look up "Getting Back Together" by Bettie Youngs and Masa Goetz. They have a great reference section and DB/DR are suggested readings.
Just remember don't reconcile too prematurely and be patient despite the feelings of one-sided workloads around the house.
It's cold as crap here so staying inside is kind of the default activity, which creates anxiety and stress too.
Me: 42 WAW: 37 Kids: 0 Separated: 06APR13 M:7 Years, T:10 years WAW states she wants to "move on": 01JUL13 "Courage is the standing army of the soul which keeps it from conquest, pillage, & slavery."