Meri baby 6 month ki hone wali h.... but wo palat ti nhi ,rolling nhi krti h...try hi nhi krti h.. not sure about cooing babbling etc wo bs awaj nikalti h like ga rhi ya chikh rhi h ,... ese aa aa da da esa kuch nhi bolti h... or samne rakhe toys ko pkdne ka try nhi krti h.....kya development delay h ,,? wo srf khud k or samne Jo b ho unke hand or fingers bahut jyda dekhti h .means fingers focus se dekhti h or uske samne baat b kre to agr hath samne lejao to wo hath focus krke dekhne lg jati h