He also has low blood and depression. I'm used to working a 9-5 job and now I don't know if I should just leave the corporate world and stay with him at home full time. It is difficult for him to be left alone but at the same time very difficult for me as I have to do some major lifestyle changes as well to give him care.
How old is your dad? How close are you to your own retirement? Do you have anyone in your immediate family other than yourself?
You can search this site and find many painful stories of those who have given up their careers, the businesses they've own, their homes, their own retirement and savings to become their parent's 24/7 caregiver and it just becomes physically and emotionally as well as financially too much.
I hope that you can find a way to get more care for your dad without having to through your job, your health and your own retirement preparation under the bus.