So sorry Omega! Needless to say. being with your loved ones is the most important right now. I've faced deaths with family and one of my best friends last year. From what I can take from spending the last moments with them (even though I didn't know it at the time), every moment counts. What's more, having other important people in your life to handle this difficult time with will give you much needed strength to pull through no matter how hard it is for you. As cliche and unoriginal this may sound, and sorry if I sound incredibly blunt, but yeah... only love will help guide you through the whole process.
I can't imagine how hard it is for you man. My dad is in his 80s and yeah, having to face his (and my mom's) death in like less than a decade, I admit, is one of the greatest fears in my life.