Have Bipolar Disorder, Loss Of Appetite, Anger, Restlessness, Confused State. On Valparin. Help?

My father is 80 years old and he is a bipolar disorder patient. He has been down for almost 1.5 years. Now all of a sudden he has become hyper active since from last few days. He doesn’t sleep at all, very confusing mind, very restless, always talking (repeating the same thing), very angry. Interferes in everybodys business. We are all finding it very difficult to tolerate him. He had been prescribed following tablets by his health care provider. 1) Valparin – 500 mg (0-0-1) 2) Oleanz – 7.5 mg (0-0-1) 3) Nexito – 5 mg (1-0-0) He took the above tables for some time and overnight stopped taking it (which he does frequently) saying that these tablets are causing him side effects. He frequently says when he is down his lever has stopped functioning; he doesn’t have appetite and all the problems in the world. We have got him tested for everything and all the reports are normal including BP . Can you please suggest, since he is not taking any tablets, can we give the above tables by mixing the tablets in food.