Sorry for your loss.
Our 19 year old also had kidney failure, and we spent every minute with him as well. On his last night, the sunset was in every direction, a full 360° sunset. April 30th was his last day and I will always miss him. He was Muteki; he was invincible.
Muteki and the Pink Balloon https://youtu.be/qTWAALHf3us
I’m shopping for an MSP that is Linux-centric. 70 workstations and a handful of servers but I will drop MS in a heartbeat if I had the right support to fall back on.