Nick Lachey is one adorable dad. The singer and television host stopped by Us Weekly's New York City offices on Monday, Sept. 22, and dished on his family life with his pregnant wife Vanessa Lachey and their son Camden, 2.

"He's growing like a weed and he seems like he's changing literally by the day," Nick, 40, tells Us Weekly's Entertainment Director Ian Drew of his son. The 98 Degrees crooner and his actress wife, 33, welcomed Camden in September 2012 after tying the knot in July 2011.

"It's just a cool time," he adds to Us of his tot. "It's them finding their personality and really starting to get their vocabulary… talk in these full sentences and [you're like] 'Where did this come from?' It's just crazy."

As Camden grows into a young boy, the Lacheys are also preparing for the birth of their second child — a little sister for Camden! The happy couple announced this past July that Vanessa is pregnant with a baby girl.

"We're expecting a little girl, beginning of next year," Nick tells Us. "I get the best of both worlds: I get a son and now I'm going to have the experience of a little daughter, which will be a completely different, mind-blowing moment for dad. On a personal side, things could not be in a better place and I could not be more excited. It's great." 

Things are also busy and flourishing in Lachey's career. He is kicking off the latest season of VH1's Big Morning Buzz Live.

"I had a great time," the singer tells Us of his experience on the show. "The spring season was kind of a bit of a trial for me — I'd never done that before. I wanted to step in and see how the experience was and make sure, like any relationship, both sides enjoyed being in the relationship. Thankfully, we did, and it's great to be back and doing it again."

He's also continuing his decades-long music career, as the former boy bander finishes work on his upcoming album, a covers record called Soundtrack of My Life

"The good thing about music is you can kind of do it whenever you find time to do it," he explains to Us. "This project actually started a few years ago… [I'm] thrilled that it's finally gonna come out on November 11. It's called Soundtrack of My Life and it's a cover album — it's all songs from movie soundtracks that were impactful to me and meaningful to me. That right song can bring out such a great moment in a film, and I really wanted to try to pay tribute to that through this album." 

Watch Lachey dish on his busy life in the video above!