Hello, I do realise the difficulties the person is going through. Since the pressure is not stable it is always advisable to keep him in hospital few days more. One EEG (electro encephalograph) study could be performed to study about his mental status like stress while he is sleeping. Since he is not able to speak and express EEG may be helpful in this. Accordingly management can be modified. Positive attitude, enrich environment and refreshing ambient around him along with good rehabiliation protocol is vital for his recovery. Have some patience and give some time for the recovery. Wish him a good health soon....