My brother got sent home from hospital but he's weak. he's a diabetic and got an infection in his blood. what can he drink & eat? any recommendations

See a doctor: As part of the discharge planning the doctor who sent him home should have told you what he can eat and drink and should arrange for followup care.

Diabetic diet: The physician discharging your brother might have suggested what diet he needs to use, if not a ada 1800 kcal diet is appropriate for him. However, please call the physician or his primary care physician to get it clarified.