DBX, I was in a similar sitch. W was staying in another room of the house, absolutely certain she was going to divorce me, but was happy to make dinner for the two of us, watch TV together, I cleaned up. No arguments, no anger. Maybe not as many conversations as you. Two questions I had to answer were: 1) is she being my lover and partner, or is she being a friend? 2) what do I want?
For me, this was absolute friendzone, maybe a bit of her using me, too (we also maintained the illusion of family for our daughter, giving W more time and more control over the relationship). As to the second question, I want a wife, not a friend. So, I stopped being her friend. It's been a challenge to balance because I naturally like people and want to be around them. I had to force myself to limit myself to being cordial, not sharing too much. What I'll tell you specifically is that you need to GAL and do 180s. Go ahead and make dinner, but bring it to a friend's house. Or make it for yourself, not her. Eat early, eat late, whatever, but you aren't her cook. Maybe have people over. Whatever it is, do what you enjoy, and do new things.
Final thought: if you keep doing what you've always done, you can't expect a different result. Whatever narrative your W has for you, you are confirming it every time you do what you've done before. I can't tell you what the right answer is but I can tell you the wrong one: doing what you've done before.
