Magic Forums

So my grandpa have just had a huge surgery but after there been some complications and there is a big risk of him dying. I'm confident when it comes to spellcasting and I have a spell which I can perform even though it's quite risky that can help him. But here's my problem he's very old and already accepted that he's most likely to die. Would it be wrong for me to meddle around that kind of stuff. And sure the spell is one of the most dangerous I the would perform and maybe is just me being selfish. Who am I to decide about his fate? He would not live many much years left and I guess it's just me who are scared to lose him. So my question is what should I do?