Normal ke?

Yah, normal je! Babies develop at their own pace, some duduk dulu, some crawl dulu, memang berbeza-beza. A few of my mum friends had babies yang took their time dengan sitting, tapi lepas tu crawling came naturally, so jangan risau sangat. Kalau dia aktif, responsive, and making progress (even if slower), likely dia okay je. Tapi kalau you're worried, boleh tanya pediatrician during the next checkup, just untuk peace of mind!