Life by Instalments

This story had me a little confused. The narrator(s) keep referring to themselves as we, I couldn't figure out if it was two young boys or two older boys or if they were girls or what. But the narrator(s) seem to be ill and they are taking medicine and just trying to live their day to day lives as much as possible. They have a conversation with a religious man and a boy, asking the religious man about his personal life and just imagining how the two go about living their lives. The narrator(s) might be writing a story consisting of short instalments based on little everyday events and that is where the narrator finds his/her purpose. Or maybe the narrator(s) know that they will soon die and they are just trying to take note of the little pieces that occur in everyday life.