The average weight for a baby girl of 9 months is 8.5kg so your baby's weight of 11.5kg is actually above the top line of the infant growth chart. She is in the top 1% of all babies of her age for weight. I am not concerned about her not crawling yet as most babies only crawl by 10 months and many skip crawling completely and simply pull themselves up and start walking. While I agree that your baby will slim down when she becomes more active, her weight is of concern. I suggest that you have her assessed by a paediatrician in particular as she had menningitis at 7 months.
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