Tanners 6 month appointment

Well this kid is growing like a weed. He is now 16.6 lbs and 25 3/4 inches long. He is such a chunky monkey compared to Makena, but he is such a cutie. He is army crawling everywhere and will also pull himself up on to his hands and knees and rock, It won't be long before he is crawling and then i'm in BIG trouble. I was looking at Makena's baby book and comparing the two of them, At 6 months Makena was 13 lbs 7 ozs and 25 1/2 inches. So they are really close in height but Tanner out weighes her by 3 lbs. I know this kid is going to be 20 lbs before he is even 1 and then i'm going to have to buy a new carseat for him.