OP please listen about the communication issue. It is no small problem. It sounds as if the communication is a lot worse than just "not perfect".
It is easy to ignore I think in the face of a wife who won't talk when you've tried and a thread full of apparently easy fixes.
However, my experience may well be relevant to you.
My husband has always been shy, nervous of discussing sex, afraid of touching me, had a lower sex drive, didn't like being out of his comfort zone.
We didn't have sex for a year after the twins were born because I was exhausted and because for me the sex was shit so why would I bother?
I eventually made myself restart the sexual relationship because I knew without it the relationship would die but the sex was still shit and still infrequent.
I also felt very worn down and insignificant being a SAHM.
We are now separating, not because of any of these problems we encountered but because whenever I was miserable and whenever I tried talking to him he never listened or heard me.
He responded by trying to find the thing to do to fix broken wife; more childcare, more housework etc but he didn't listen to me or talk to me meaning he did the jobs wrong and made more work for me, wanted credit and never listened to me about how to do them.
In bed he would make a half hearted attempt to touch me sometimes but would really just focus on his orgasm.
Also he would never share with me his feelings or his life. Stupid daily crap that made me feel included. He would never consider me in decisions he made. When I talked about how I felt he would read into what I was saying a thing to do to fix it without talking to me and this would result in him doing some mad things "because you told me to".
Eventually I left (on Monday this week) because I have discussed and discussed and discussed how I feel, tried to get him to discuss how he feels etc and it was making me suicidal.
Him taking it upon himself to do housework, bringing me cups of tea, telling me I was lovely, none of that helped because we didn't communicate. Lots of the time it was worse because I felt he was treating me as a pet and not as an equal partner.
There is absolutely no going back for me, the thought of trying again makes me ill.
I know it is slightly different because your wife seems to be the one not talking but the effect of trying to guess what to do to fix it may be the same.