@eds611, The psychological weight of this type of diagnosis is heavy; for the patient and the families/friends. We face it and deal with it in unique ways. He'll figure out what is best for him, and that may change over time too. With Tagrisso showing positive results for him, I'm thankful that he has some time to figure out what it all means for him and your family.
I continued on with my 'regular' life for the first two years after my diagnosis, because I didn't know anything else. Once I started accepting the reality of everything that had happened, I was able to make some changes, focusing on what was most important to me and heathiest too. But it took a couple of years to get to that point. It takes time, and he's fortunate to have your support.
In the early days, I know my husband likely told more people than I did. It's not easy to talk about ourselves, and he needed to talk to someone other than me about it too. This type of diagnosis impacts you too. You can come here to talk and to ask questions. Do you have some support when you need it? Activities or people that can serve as a distraction, even if you aren't telling them about the cancer? How are you holding up?