Machka, I know that it pains you to leave Rowan alone at the end of the day. You have to keep the homefront in order for him as well. I would suggest placing a large picture of you or the two of you at his side to let him know you are always at his side, in person or spirit.
Cycling is not going to be something he'll return to for a while. Brain injuries are very daunting, I have a friend who was involved in a bad wreck on his bike on the west coast and it took a while...on the other hand he started a disability advocacy and assistance organization that has helped hundreds across a large portion of our state, including persons with HIV/AIDS for close to 20 years.
Thank you for being there for him.
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I don't know nothing, and I memorized it in school and got this here paper I'm proud of to show it.