How Do They Grow Up So Quickly?

D doesn't say "mock" for hoe anymore. Everytime we went to garden he'd grab his child-sized rake and "mock" to help me. Well, now he says hoe. Which is good. I'm glad that he knows what it is. I really am. But that means he's big! I'm not ready for that. C is nearly 6. If she were going to public school she'd be starting Kindergarten! I know that she's still going to be home with me and we're still going to be doing the same thing we always do, but just the knowledge that she's old enough for that milestone just blows my mind. Where has all this time gone?