Six weeks is still early. You are not far out from your treatments/surgeries. You will probably return to normalcy with a different baseline, so to speak. The best we can do is have cancer on the back burner. Our view of the future is changed. But life can be good, and valued more. If the feelings persist, a therapist familiar with health issues can be helpful. I did that, briefly, and it helped me sort out what emotions (and exhaustion) was due to health, what were due to caregiving, COVID, other stuff. Honestly, in your/our situation, it would be unhealthy NOT to have emotional aftermath!