Time does help. It doesn't heal everything, but it helps us become numb.
I know it doesn't feel like it now - but there really will come a day where you will go beyond numb to feel alive again. There really will come a day when this R will fade into relative insignificance compared to the other events in your life.
Meanwhile for now - hang in there and be nice to yourself as you ride out this part of surviving the big D. Go away somewhere - or do what you need to do for you.