Hello there and sorry to hear the bad news well my sister JCAWORK made me promise her I would tell it like it is since she is not here. She said everyone is going to say keep the hope and god will watch well you are right less then 1 percent will live my sister brain mets were gone and 5 days later she passed away. I am so sad it hurts but she lived everyday as if it was her last and she put things in order and it made life alot easier in the end and dont lie to your dad because he needs to know what you think . We are not doctors but my sisters doctors said nobody know you like your family so they will really be the one to know when it is time. or at lease better then he could and he was right I knew when it was time for her to go. So i say you spend all the time you can take pictures and record his voice because I wish I had done more of that. I will be thinking of you and your dad. Please fell free to PM me any time and I am keep hope for everyone.