Stress management problem. His stress.

He is in final year of MBBS,but before giving exam he has been addicted to cannabis for 20 days to get energy ... After this he has been diagnosed as hypomanic phase... He has taken Na valoprorate,resperidone bt now he is only under olanzapine... Current problem is he is too much stress because of some reason which is normal to every individual like about exam result ,about earning money,about our relationship ,about sister's marriage... Many more ... I had told u the causes to make u aware that those r very natural tension we all people r dealing with... But those natural tension making him very stressed and he previously started crying all day bt now he forcefully making laugh by his face and saying i m nt sad... I want to know how that will be manage because day by day its increasing ... His family support for this is negligible ... I make him understand many times that those are normal tensions bt he is like he can't handle ... He jst can't handle his stress ...