Here is the advice I wished someone would have given me.
Enjoy your last summer with your oldest. Life will be very different for you when he leaves.
I expected the empty nest feeling when #3 left, but #1 was supposed to be not such a big change. Nobody ever told me that he’s going to spend his summers interning away and won’t be around nearly as much as you thought or he thought he’d be. He’s grown up and will begin starting his own life. Cherish that last bit of time you have with him as a fully engaged member of your household. Enjoy watching him from afar, spreading his wings, and forgetting to call because other stuff occupies his thoughts.