Yep, it's a pet peeve of many, and there are all kinds of gadgets to help. However, I have a quick tip on how to squeeze the toothpaste to the top in about 5 seconds without any special equipment. Let's see how!
First of all, it's never a problem when the tube is full or at least 50% full. When the tube starts to empty, ideally it would end up looking like the tube at the bottom.
However, it's usually squeezed from the top, with all of the toothpaste left at the bottom. So annoying!
Now, this is what you do.