Time flies when you're being adorable and gurgling 24/7 — just ask Kailyn Lowry's newest son, Lincoln Marshall Marroquin. This cutie is seriously living the good life in Delaware with his parents —not only does he have a mom who doubles as a meal source, his dad is a bonafide mega-stud (oh hi, Javi Marroquin), and his brother, Isaac, is pretty much the sweetest little boy on the planet. In other words, it's good to be Lincoln!

Credit: Kailyn Lowry on Instagram

This kiddo was born back on November 16, and we can't believe how fast he's growing up. It seems like just yesterday that Kailyn was pushing this bundle of joy out of her lady parts (sigh, memories!), but it's actually been a whopping five months since Linc made his triumphant debut after 16 hours of labor. In honor of the occasion, Kailyn shared a sweet photo of Linc and Isaac on Instagram, and we just can’t even deal. Squeal!

Before we know it, Lincoln will be toddling around Kailyn and Javi's house, and it won't be too long before this little one is able to chat up a storm with his big brother. We're sure Isaac is thrilled about having Lincoln in his life, but can you imagine how excited he'll be once his little bro can actually play with him?

Hopefully MTV's cameras will be around to capture the fun, because we're dying to see more of Lincoln and Isaac!

Are you surprised at how big Lincoln is? Sound off below!