Thank you for the question. Its generally 6-9 months that a child starts sitting and crawls. As your child is around 10 months its just the upper limit ans can wait for couple of months. You can further train the child for sitting. If doesn't get to it in next two months too, should visit a child doctor. Regarding, feeding you can feed the baby suppliments in small amount for more times rather than large amount at single time. Gradually the child will eat.. Be sure that the food is healthy and clean.