Hi, My Daughter Is 8.5 Months Old And Weights Only

Hi,
My daughter is 8.5 months old and weights only 6.6 kilos. She is happy and active otherwise. She can crawl and sit on her own. We are of Indian origin and I am 5'1" and my husband is 5'5". We were both small babies apparently.

Thanks in advance,
Shwetha