Nerve involvements. Advice what to do.

My brother's problem started 1month back..initialy he had numbness on his little finger,right hand before left and within 3-4days it spread over the whole hand and slowly involves the nerves of foot and same numbness in foot along with difficulty in walking depicting weakness in muscles.and accompanied with body pain and some tym pain in half side of face.we took him to the doctor on 4th day when his foot gets involved and in hospital he suddenly got his half side of the face involvememt.and because of that his fald side of face look litl down compare to the other half.Dr.diagnosed him with GBS and treatment of immunoglobulins and physiotherapy started on day 5..He got treatment for next 5days and slowly start recovering..muscle weakness was still there but his condition get improved..on 6th day after admission dr.discharged him saying that merves vl get heal slowly and physiotherapy to be continued and now aftr 2wks of discharge his problm again started..please advice what to do..