My boy is growing fast:( I already miss him as a tiny (well sorta tiny) sleepy baby. He has become very alert and very vocal.  He oohs and ahhs all day long. He also has a firm grasp, mostly on my hair! He is able to track objects with his eyes very well. His pediatrician told us he would be rolling over very soon because of his strength. He also holds that large melon of a head up pretty well now. I would say he is pretty advanced for 7 weeks :) but I tend to be biased.