Memory and behaviour issues. With time!

My father aged 60 met with accident 3 months back till that time in ct scan there was contusion and he has some memory issues. But recently we had his mri brain done for which report is attached. Now he has some memory issues and also behavior issues. From past two days he is asking to go to his old home which he sell 7 year ago. He is saying that his wife and two kids are waiting there and he becomes aggressive and agitated if we stop him to go.. We are very much confused how to handle this situation. He did not listens to anyone and only saying his things only.. Neither he becomes distracted with anything... Please help what we can do.. Everyone is saying it will take time for him to recover.. We are very worried. Right now he is on amantex 100mg, donep m medicine, qutan25 mg. Also he is diabetic and bp patient taking medicines for that as well. Please someone help how to handle this situation or will he get better with time