I'm sorry you are going through this. I too could have written this myself. 
my dad passed away almost 4 years ago now. Started in his lungs, but had spread to his spine, brain and there was talk of prostrate too. He was diagnosed in June 2017 after having a seizure at home, alone. I lived 4 hours away and had 3 young children. I ended up moving us all in with my in-laws that lived 30mins away from my dad. He passed away on August 4th 2017.

my dad was fighter through and through. It was heartbreaking seeing him go from a strong man, to a weak frail shell, crying through pain and his own heartbreak.

we both so valued those precious few weeks we had together and we became so close and bonded like we had never ever done my entire life. I was right with him right until the very end, holding his hand. Looking back there were various signs of different stanges that occurred, but he was still very mobile, getting up to the toilet, but did need a lot of help getting about. He stopped fully eating and drinking about a week before he passed and just slept 24/7. He was on mild pain meds. The Dr, Carers and nurses kept saying he wasn't "at that stage yet" and didn't need them. In my heart I knew he wasn't long until passing.

We fought and fought to get him into a hospice, we (myself and his sister) couldn't physically cope with him anymore. He agreed to go. He passed away the next day peacefully, and finally got the pain meds he needed long before. The hospice Dr was disgusted that he had pain meds refused and actually put in a complaint!

if you can, go and be with your dad whilst you still have a chance. Believe me, it's the only thing that got my through it all. Knowing we parted with so much love and special bond.

xx

I'm sorry you are going through this. I too could have written this myself. 
my dad passed away almost 4 years ago now. Started in his lungs, but had spread to his spine, brain and there was talk of prostrate too. He was diagnosed in June 2017 after having a seizure at home, alone. I lived 4 hours away and had 3 young children. I ended up moving us all in with my in-laws that lived 30mins away from my dad. He passed away on August 4th 2017.

my dad was fighter through and through. It was heartbreaking seeing him go from a strong man, to a weak frail shell, crying through pain and his own heartbreak.

we both so valued those precious few weeks we had together and we became so close and bonded like we had never ever done my entire life. I was right with him right until the very end, holding his hand. Looking back there were various signs of different stanges that occurred, but he was still very mobile, getting up to the toilet, but did need a lot of help getting about. He stopped fully eating and drinking about a week before he passed and just slept 24/7. He was on mild pain meds. The Dr, Carers and nurses kept saying he wasn't "at that stage yet" and didn't need them. In my heart I knew he wasn't long until passing.

We fought and fought to get him into a hospice, we (myself and his sister) couldn't physically cope with him anymore. He agreed to go. He passed away the next day peacefully, and finally got the pain meds he needed long before. The hospice Dr was disgusted that he had pain meds refused and actually put in a complaint!

if you can, go and be with your dad whilst you still have a chance. Believe me, it's the only thing that got my through it all. Knowing we parted with so much love and special bond.

xx

Hi

Im sorry for what your going through.

My dad was diagnosed with lung cancer around late Feb and at the point of diagnosis we were told he had 2 weeks left. I'm actually fact my dad stayed with us a further 6 weeks and passed away at home peacefully on 22nd April. During that time we had what I call several false alarms - to the point we thought that was it and were saying our good byes. There were days when he was really low and others when he totally perked up - it can be very up and down. Towards the end Dad was less talkative and drifted slowly out of conciousness - it's when that happens you know you are near the end. All I can say is that use this time as a gift, spend as much time together and say all those things that are important. We also lost our mother to cancer 3 years ago but the difference was it went undiagnosed and her death took us by total surprise. While no experience is any easier, all I can say as hard as it is to know your losing your loved one, simply having that time to say good bye and have as much quality time really helps with the grieving process. 
 

I don't know if what I'm saying helps at all - just cherish every moment as you reasonably can and know that time eventually heals.

Wishing you both strength and fortitude.