I've been looking everywhere for knee high boots (yes, I know not considered trendy on MN!) with only a very small heel. Found just one suitable pair in my city and they are in Next. I'm a 5, but the 5 really squeezes on my bunion, same for the wide fit. The 6 are more comfortable, but is obviously too big in other ways. Do you think it would work to buy the size 6 and put insoles in? I can't take the risk that the leather wouldn't soften around my bunion in the 5.