My pregnancy and since baby birth this app has been of great guide to me. Every week article update would be so accurate with my pregnancy weeks and baby weeks. But after 3months completion the article published is far ahead from my baby activity. For eg: app shows after 5months baby can sit and stand my baby is 5.5months n yet she didn't roll, she isn't saying mama papa etc. She responds well to what we say all day active, talking in her own language, laughs when we play but not a single activity mentioned in 5th month week article. Does this mean she is slow? Is this normal? I'm worried that after 5.5months she isn't rolling yet.