You are a good son to keep up with your parents. The good thing is though, that they stay with you, in your heart and your mind even after they're long gone. Gather up their knowledge now and store it in your brain's library for you will surely need it one day lol.
My own parents have been gone for several years now, but still I learn and grow using the knowledge they planted all those years ago. They casually drop seeds disguised as comments or suggestions during day to day life and hope one day they will sprout and take root.
I certainly will Tamara. That's why I like spending time with them. The thought of losing them some day hurts a lot but it is the cycle of life that we'll all experience