Hi there, how are you doing? I am sorry to hear what you are going through. It must be completely devastating to see your father like this and even more devastating for your 10 year-old. I sincerely hope you're father is ok and feels better.
I really think a counselor could help you out a lot. They talk to you nwithout judging you and they show you good outlets for the pain and geif you must be feeling.
Sometimes relaxation techniques help, maybe you could try a few of them, there are plenty to try. Of course you will alwys be anxious and sad missing your father, its totally understandable.
Also there are many people who are going through the same thing you are. I am sure there are people on these forums and other websites that you can connect to and I am sure they could give you great tips.
I wish I could give you a few tips, but I am really not in that position as I am also only 15.
I just wnat to let you know that I think you are a wonderful person having stood by your father with his lung illness and your mother's crohn's disease and diabetes. You are truly one of the most caring and kind people. Your parents and son are so lucky to have someone like you to help them.
Please take care of yourself and keep posting on how your father is doing, I am thinking of you...
Bye for now,
ps- I hope your eight brothers and sisters are allright too.