I'm so sorry you are going through this. Unfortunately I know exactly what it's like - my dad died of terminal cancer just 3 months ago. He went downhill very quickly and I totally understand the pain of seeing your father so thin and frail. At the end, he looked like a Holocaust victim. Fortunately he died at peace in my presence which was very healing for me. I take a lot of comfort in the fact he is not suffering anymore and is in a better place. Hold onto your spiritual faith at this time if it brings you comfort and make the last days/weeks/months with your dad a time of quiet healing and reflection. Before my dad became too sick we used to look at and talk about family photos. I didn't have the best upbringing so that in itself was very healing. When you look back those reflective times will most likely mean a lot. Thinking of you. Do pm if you need to talk.