After Jade let out a laugh, Tanner, 30, chimed in and said, "We'll see when the next one happens, but yeah -- we're officially not not trying!"
"I just love the idea of our kids being best friends," Jade added, before joking, "Though, they might hate each other at some point!"
Jade said the idea of having two children under the age of two is a little intimidating, but it doesn't really scare the couple.
"I think the third one is the scariest one because at least there's two of us, and by the time the second one would come along, Emmy would be old enough for me to kind of handle," Tanner explained.
"Three under three and you're outnumbered," noted Jade. "And they're all little!"
But Tanner is determined to have a son, no matter what it takes.
"I want to at least have one," admitted Tanner. "We joke and I tell her that she's going to have to keep on trying until we get that boy."
The couple, however, will apparently cap their family at four children -- at least that's what they're thinking for right now.
"I mean, if we had four girls, I'm not saying I wouldn't try again," Tanner told People, adding that he wants "to experience both." However, Tanner acknowledged "it's not [his] body" that would have to go through multiple pregnancies.
As for whether Jade would ideally choose pink or blue for her next baby, she said she'd love to have a daughter as her second child.
"I like the idea of sisters, and then a boy," Jade revealed.
And the pair already have a name picked out if Baby No. 2 is a girl! For a boy, however, Tanner and Jade are "still debating."
"Boy names are hard for us for some reason," Jade disclosed.
Jade and Tanner announced they were expecting their first child together in March 2017, and then Emerson arrived four weeks early in August of that year.
"They say that statistically if you have a baby early, you're most likely to have all your children early so I'm kind of expecting that," Jade told People. "I'm just going to have to probably go to more appointments and keep a closer eye on it."
But Jade was apparently "perfectly healthy" at the time, so she wasn't sure why her baby girl came early. However, Emerson was born with a knot in her umbilical cord, so something like that happening again worries the former model.
"I'm trying very much to think it's all going to be good and it's all going to be healthy and it's not going to happen again, because she could have been stillborn. It actually happens with babies that have a knot in their umbilical cord," Jade explained.
Jade initially competed for Chris Soules' heart on The Bachelor's nineteenth season, while Tanner first appeared on Kaitlyn Bristowe's edition of The Bachelorette.
Jade and Tanner met on Bachelor in Paradise in Summer 2015, got engaged during the show's finale in Mexico, tied the knot in January 2016 for a televised special on ABC, and then hashed out their issues when they appeared on Marriage Boot Camp: Reality Stars in late 2016.
And now, the couple is just enjoying watching their little Emerson grow up.
"She just started sort of crawling. I mean, she can move. She slithers -- and clapping," Tanner gushed. "And she's starting to eat actual food, too. So that's all been in the last couple of weeks."
The couple do, however, have different parenting styles.
"He wants to just be the fun parent, for sure," Jade said of her husband.
"Maybe I'll change my tune when she gets older and I actually am mad at what she's doing," Tanner reasoned. "Maybe then I'll become strict. But I think I'll be the fun one."