How to treat a nine month old child who is unable to sit without support?

Q: My 9 months old son cannot sit without any support. Even if he is provided with a support he always sits with his spine bent. Could you suggest me any treatment so that my son can sit properly without support?

A:Your son needs to be evaluated properly by a neuro-developmental specialist. Not being able to sit at 9 months needs attention and proper evaluation. Until you seek proper advice, you can try and sit the baby with some support.