Check him out! He is sitting up and holding his head very well! Logan is also cooing and smiling all the time. WE LOVE IT! He is starting to make the transition to 3 hours between feedings...and he still loves to sleep on his belly. According to our scale he weighs 13.5 POUNDS! Zach only weighed 12.5 pounds at this age. Logan fits nicely into size 3-6 month clothes.