I have been teaching cop-cop on and off for a few weeks. I am at the point where she is between my legs and will only put one foot or the other on my feet. If she is laying down she will put both of her feet on my feet. I can not get her to put her weight on my foot. I've also tried having her put her feet on mine while she is laying down then telling her to stand, but she takes her feet off of mine. Any ideas on getting her comfortable with putting her weight on my feet?