Where does the time go?

How did my baby Finn go from this:

to this:

Finn will be 8 months in a week and I am dying. He is getting so old and I cannot believe how fast time really goes by. Finn is such a jolly baby and is so quick to smile. He loves sitting up and is ready to crawl; just has to figure out how to make that happen. He loves to eat any kind of food and dives for anything edible anyone offers him. He can wave and do patty cake, which makes him seem like such a little human. He loves his big brother and gets so excited when Gus pays any attention to him. Finn is such a sweet little boy and I don't know if I'm ready for him to get any older. Can't he just stay 8 months forever??