My Brother Endured A Severe Head Injury While Riding His

my brother endured a severe head injury while riding his bike, and a homeless man pushed a cart in his path. He was in USC/General hospital Los Angeles due to head concussion, fractures around his left ear & eye socket. His brain was bleeding in the first & second CT scans, but showed no bleeding on the 3rd. He was released to go home, and after a week he is still having headaches, has been nocuous to eat, and cannot walk without assistance. We took him into Kaiser (his plan), and they asked questions then made several appointments in a few weeks down the road.
I think we should take him back into urgent care or emergency since he is no where moving forward in his recovery.
Oh I should add that they gave him a week later Tylenol & codeine for his severe pain, which he had a bad allergic reaction to, but no new pain meds were prescribed.