hi,my baby is 8 month old now,she is little less weight,birth weight is 2.7 now she is 6 ,she rolled over but not crawling,and she is sitting with support without support she is not sitting ,is anything to worry about?and can I use walker for her? is this helpful for her walking and sitting and standing

A. Hai good afternoon !! Baby weight is fine according to age,nothing to worry. As baby is rolled over,sitting with and without support,crawling it takes time 8-9 times. Walker might cause discomfort and makes baby walk early instead crawling. Do tummy time - Place a blanket on floor,keep baby on tummy side for 5-10 minutes it helps in holding neck,crawling,abs strength.