If you didn’t know, Billy — who is 7 — was born with Tetralogy of Fallot, which is a severe heart defect that affects the way blood flows through the heart and brings oxygen to the body.

Earlier this year, Jimmy divulged that Billy had undergone his third open heart surgery.

“This weekend, our boy Billy had his third (of three, we hope) open heart surgery. We went into this experience with a lot of optimism and nearly as much fear and came out with a new valve inside a happy, healthy kid,” he wrote on Instagram in May.