Lots more riding boots time

I've been wearing my riding boots rather a lot these days, part of nearly every day. I've also been wearing my wellies for part of most days, usually when I go out into the garden.
Anyway my main point is that I've started to think that the riding boots are actually too tall. Now I usually feel that where boots are concerned, the taller the better. Now that I've been wearing them for several hours a day, I think they are slightly too tall. I used to love the way they would press into the backs of my knees but now they have started to rub a bit.
At some point I will probably get rid of them but I want to get as much wear as possible out of them before the weather gets too warm and they make my legs too sweaty.