Clinical psychologist Sarah Helps says that babies should start sitting up by 6 months and there are ways to help them if they're still wobbly.
Sarah Helps, is a clinical psychologist and works both in the NHS and in private practice. She has worked for over 15 years with infants, children and adolescents who have psychological difficulties, and their families. She has a particular interest in working with children where their development has gone awry, due to neurodevelopmental difficulties, illnesses and injuries or parenting difficulties.
* Info correct at time of filming
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