If I may die....

I was talking to my husband about if something happens to us and we need life support how long do we want to give each other to come out of it. He said he wants me to give him 2 weeks and then pull the plug. I personally want him to have more time, but I will honor his wishes. He said he will only give me 2 weeks as well. I want more time than that for myself. What do I need to do to be able to give myself more time? Or am I screwed and he gets the last say? I personally want at least 2-3 months, maybe more. I would want to pay for it and not him. Even if I pay for it after I wake up or something. I don't want just 2 weeks.