Xavi is 11 weeks old today. No recent measurements but as these pics show he is growing and filling out. He is much more alert, looking at his hands and trying to put them in his mouth. He is starting to verbalize too. Neck strength and head control is improving. He is sleeping 6-7 hours at night now which is great but tends to cat nap for 30 minutes during the day, and would rather sleep in stroller or papoose than in cot.