The child is 3 years old with splayed legs. How to correct it? thank you

I watched TV, and a child gently broke his foot with a hot towel at night. Just stick to it. And when she sleeps on her back at night, her feet don't need to form the habit of lying flat, so she can have beautiful buttocks. As the yoga teacher said, she also added calcium and luster. Nowadays, children don't pay attention to whether they will grow taller and have O-shaped legs after calcium supplementation.