Hard call to make. I'm 3.5 years into my brain issues, still can't exercise beyond spinning on my cyclops indoor trainer in granny gear for 30 minutes without getting a headache (I still have an old school Centurion for indoor riding).

I sold my Cervelo 2 weeks after a guy ran a red light and t-boned the right side of my Toyota 4Runner. Truck did a 270 degree spin and I finally stopped in the opposing lane of traffic, snapped both rear wheels off at the axles.

I hope he has a nasty concussion.

It pained me to keep seeing my bike just sitting there being fully aware that I'm making zero healing gains with respect to exercise.

You're still early on in the healing, keep it for a while longer, as they say your mileage may vary.

Mike