Oh crap I think I may have misunderstood. Did you want Sherlock born like that/like that from before the time John met him? (I assume that's what John feeling guilty means. That Sherlock cured him, but was still disabled himself, and John felt guilty.)
Cause I sort of... didn't do that. Let me know.

(But otherwise, if you don't mind when the injury occurs, I sort of have 7k words already, and it's not done yet.)