I am at roughly 3cm. I still have 4cm to go according to my plan. But I have already seemed to develop ballerina foot! I have not stretched as I should have. I have developed a pain in both of my inner knees, presumably because of tightness. Can someone please let me know how I should go about stretching properly to reverse this? I invested so much money to develop tightness at just 3cm. Any and all advice is appreciated. I do have a slant board.