Impared health due to injection. Ali!

After my diagnosis of  Bipolar manic and have got OLANZAPINE 300 long acting injections ,my physical and mental condition is declining day by day. After few weeks , I developed bad memory ,I can't think ,my failing to express myself and had started to have difficulties in my study.      Soon I reduced in my consciousness, cognitive function is impared.Brain function is seriously affected as I can't carry on my studies or even failing to do my daily activities on my own. And physically I began having severe weakness,tremors, heart related problems like palpitations , throbbing heartbeats.More health issues like back pain , eyesight problem In 5 months span after injection, I am reduced from a cheerful BSC athletic built to an untidy stout guy with frequent memory loss, whose brain is fogged not even close to a schooling lad of standard vi. TBH,my academic career is in trouble. is there any possibility of my recovery physically and more necessarily mental recovery to as undergraduate ali