my daughter is 6 months old she doesn't turn on her sides not sit without support, is she ok and her weight is 6.3 kg

A. It It’s completely okay if your child is not ruling as of now what I can do it by the age of 9 to 10 months also and about sitting independently that only happens by the age of eight months because a child would learn to sit with support by the age of six months and then independently before that a child has to be lying down position only