Growing and growing

Holy moly, is it the middle of January already? Next week jaymeson will be 5 months old. That just blows me away. He is growing so fast it's hard to keep up. He now has two little teeth, the front bottom ones. They are coming in so fast! He can sit up all by himself (it doesn't last to terribly long before he starts to tip over lol). But when he does tip over he rolls on to his tummy and pulls his arms out in front of him and starts moving like crazy, in efforts to crawl. I really truly never had a little newborn lol, he is just growing so incredibly fast.