Talk to Neuro Physician on Memory Issue

my father had a paralysis attack in 2011 , on the left side , he had a bike accident 10 years before paralysis attack that messed his left knee and he had problem walking and then the paralysis attack made it weaker , now he started having memory issues , he some times start to say things that didn't happened , emphasis on his idea that has never happened , he remember his kids and their names but get confuse forgetting the house and where he is and say things ha never happened , we dont have anyone , our lives depend on our father please anyone angel of God help us treating his memory issues because he is weak and say things unreal so we cant leave him alone so God forbid he fall and hurt himself , me and my family cry everyday several hours trying to make him understand please help me treat him i will be your thankful whole my life , all of this putting me and my siblings in so much depression