Babies with big heads!

My LO’s head is in the 99th percentile. He’s almost 5.5 months and still has a wobbly head when placed in a seated position or on our lap etc. He isn’t sitting independently or in tripod sit yet either. Otherwise he’s thriving... rolling over both ways, great at tummy time and even close to army crawling. He still struggles a bit with pull to sit as well but can do it when he wants to. Does anyone else’s baby have a large head and experiencing the same thing?