Aidan, my son, has just turned one and is still unable to sit up. I know Charge babies often have poor upper body strength but does anyone have any information about any problems their baby had trying to sit up. Aidan's physiotherapist is unsure how worried she should be about his lack of interest in sitting up, he pushes to lie back all the time. Aidan does have a trachy so this may not help as lying down opens his airway more, but still we need some advice.