Firstly, in my experience with the medical system, which is sadly a great deal more than I hoped for my life, it's hard having multiple people communicating wit

Firstly, in my experience with the medical system, which is sadly a great deal more than I hoped for my life, it's hard having multiple people communicating with medical experts. Information gets lost, doesn't get recorded, gets misinterpreted, misfiled, forgotten. Having multiple people asking questions at different times means someone never has the full picture of what's going on or is getting relayed or potentially misinterpreted information. It is absolutely better if one person is always present for conversations with doctors and nurses, even if his sister or you are also present. This way someone is guaranteed to have all the information and nothing gets lost or forgotten. You can all make decisions together, but only if you all understand all of the information at hand. In my experience with grieving people, which is also extensive, don't try and take over, often people try to manage their grief by managing the situation. Taking that away from him takes away his coping mechanism. I don't know your family and I can't speak for your situation, but if it were me, I wouldn't try and inject myself. I would keep this absolutely as simple as possible: "Hey, we're here for you. Thank you for stepping up and managing all this, I know it's almost impossible to keep track of what's going on with doctors coming and going constantly. What can we do to help?"