Kids grow up so fast! That's certainly the case for Fixer Upper star and mom Joanna Gaines.

Chip and Joanna are the parents of five kids, ranging in age from 4 years up to 17.

So they're in the midst of many milestones and life stages.

But they have a big one on the horizon: Their son Drake's high school graduation.

The couple spoke to People about this upcoming transition for the family.

Chip said, "Five babies, one that just started his senior year of high school."

So we're freaking out about that." He continued, "Jo's been an emotional wreck. You can quote me on that."

Joanna explained, "I think for us, it's the realization that we're this tight little family unit."

"There's seven of us, but knowing the second that one baby leaves, it changes that dynamic."