It is totally normal given what he has been through. A month from now this should begin to taper off. While I always encourage people to get reengaged in life as quickly as possible after treatment (so they start the mental process of moving on and finding their meaning again), it comes slowly, and cannot be pushed.

Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.