My daughter is 8 weeks. The day she turned 6 weeks she rolled over for the first time. Then a few days later she did it again so I know it wasn't just an accident. She has held her head up since day 1 and follows objects and people now. She smiles constantly. And if you hold her hands she'll stand up and stare at things with her head held up. Just curious what other babies were doing by 8 weeks!! I love how each baby is different