May 20, 2016 01:15 PM

Holly Madison is already a mom to 3-year-old daughter Rainbow Aurora, but when it comes to parenting a little boy, she might need a bit of time to get used to the idea.

Case in point? When asked by PEOPLE Now what makes her most apprehensive about adding a son to her growing family, her answer was immediate.

“Circumcision!” the former star of The Girls Next Door, who is seven months pregnant with her son, says with a laugh. “I tell my husband [Pasquale Rotella], ‘You have to do it! You have to handle that!’ ”

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“Some people will tell me that once you have your second baby, it’s just as easy as one,” Madison, 36, explains. “Then a friend texted me after I announced my pregnancy [to say], ‘Watch out, two is like three!’ and I’m like, ‘No, don’t tell me that!’ “

She also shares details about her second pregnancy in comparison to her first — namely that cravings aren’t really a thing as much as the fact that she has felt “grossed out” by specific things, and she just feels more sluggish overall.

“I’ve been more tired, lazy, not craving healthy food,” she admits. “It’s crazy how different each pregnancy is — not just from person to person, but even myself.”

Madison adds, “Other people ask me for pregnancy advice, and it’s hard to give advice because each is so different.”

Madison released her second memoir, The Vegas Diaries, on Tuesday.

Jen Juneau

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