Tell Them Before is Too Late
I was very lucky that I grew up knowing who my grandparents are. To me, children growing up knowing their grandparents are the luckiest children. The love and care from the adults are essentially doubled. This is why I make sure my children know their grandparents.
I love all my parents and grandparents. As they leave us, the experience also changes us. The world turns a little bit colder, and life feels a little harder. It is inevitable that they will soon leave us. If you have the opportunity, tell them that you love them.