One: You can start practicing yoga today. Yoga can stretch your bones and try to lengthen your left leg, but it's only a matter of time. It takes a long time to shorten it, but once it is stretched, your legs will not be short. (Adults can also)

Two: you can do orthopedic surgery and ask the doctor the price.

Three: don't raise the insole, it's useless. Raising the insole is useless because it is soft. When you go up, it will press down. The best way is that you can write an article on the heel, one high and one low! The heel is hard and not afraid of being crushed.