As you followed the world championships, how connected did you feel to the sport?

I feel pretty removed from the sport, the most I’ve ever been in my life, just because of everything we have going on, everything that we’re getting ready for. Every day we walk down the hallway when we’re putting the kids to bed, and every day they see this big photo of me swimming butterfly and both the kids say, “Dada” or “Daddy.” So that’s cool. But there aren’t many active swimmers that I talk to. I’m not going to many swim meets.

You said in 2016 that you’re not sure you ever swam an Olympic final that didn’t include at least one swimmer who was using performance-enhancing drugs. Do you worry about the public’s perception of the sport in the wake of controversies swirling around athletes like the Chinese freestyler Sun Yang, who was shunned on the medals podium by a couple of his world championship competitors?

I’ve made it really clear how frustrated I am that some people choose to take a short cut and use performance-enhancing drugs instead of putting in the training and the work that it takes to be a champion. I understand the frustrations of the people taking very public stands. But by focusing on what other people are doing, they’re expending a lot of time and energy on something that is out of their control. There’s only one group of people who can really clean up the sport and that’s FINA.

What’s it like knowing you and Nicole, who is due with your third child in October, are soon to be outnumbered? I’m not really stressed. Coming out of the 2016 Olympics, it was an unknown how I’d be able to take care of myself, let alone an entire family. I had never taken care of myself before. I’ve gone from having everyone else telling me what to do in the weight room and in the swimming pool and away from the pool to now trying to figure out how to raise two children, run a household, travel globally and make sure Nicole has everything she needs and make sure she’s feeling O.K. and calm. We had no idea what we were doing with the first one, we had no idea what we were doing with two. We sure as hell don’t know what to do with three.