Concussion symptoms and not quitting

Hi Brooke, you’ve really inspired me with your “once it’s on the calendar it’s as good as done” teaching to time management. I’ve tried to implement this in my own life to some degree of success – there are days I nail it and days I need to do thought work around procrastination… then there are days when i have concussion symptoms that make it very difficult to see/think straight and necessitate a rest. How can i honor my commitments to myself on my calendar AND take care of my brain when the symptoms crop up randomly? Am I missing a piece to connect the two? Thanks so much, B