“Little People, Big World” stars Zach and Tori Roloff recently revealed their son’s Achondroplasia diagnosis, but the new parents — along with Jackson’s grandparents — worried about his size long before his birth. In previews for and upcoming episode of the TLC original series, Matt and Amy Roloff weigh in on their grandson’s potential dwarfism.

In the clip, Amy questioned the size of Zach and Tori’s son as the expectant parents went off to have an early ultrasound. Her ex-husband Matt didn’t want to speculate about whether or not Jackson would be a dwarf, assuring her that what was meant to be would be. The “Little People, Big World” star later told cameras he didn’t have any strong feelings about his grandson’s size and would love him unconditionally, average sized or not.

“Doesn’t really matter. I’m going to be excited about either one,” Matt said in the preview (via Us Weekly). “I have a feeling it might be LP [little person], you know, from the ultrasound. I’m not an expert, but I’m feeling some LP coming on.”

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Zach and Tori are equally unbothered by their son’s dwarfism. The “Little People, Big World” couple revealed their wishes for him in a recent interview with People magazine. Tori’s hopeful Jackson will be a good person, akin to his father, while Zach told the publication he and his wife are ready to make any and all of his dreams come true.

“Whatever he wants to do in life, we’re going to find a way to help him do it. That’s our job in life now,” he said.

The pair confirmed Jackson’s Achondroplasia diagnosis in an earlier interview with People. They vowed to parent him the same way the would an average sized child. Zach told the magazine that while things will be more challenging for Jackson, he doesn’t subscribe to the belief that he should be treated any different.

“You have to encourage a dwarf child a little more because it will take them six steps to do what others can do in two,” he said. “But I knew, dwarf or not, I was going to parent my child with the mentality that not everyone gets a trophy. You have to earn it.”

The first time parents are hopeful that sharing their son’s diagnosis will comfort other parents of dwarf children. Zach revealed that he and Tori are often approached by fans who claim they’ve found solace in their story. The “Little People, Big World” stars want to be a resource, as well as an inspiration, to people dealing with similar struggles in life.

“Tons of parents email me to say what an inspiration we are for their kids, showing that it’s possible for them to get married and have a family,” Zach said. “The other day we met a couple who have a dwarf child. They started watching our show and it made them feel that it was all going to be okay.”

Zach and Tori welcomed their baby boy on May 12. They made the official announcement on Instagram. The first-time mom shared a photo of her little family along with a loving message for baby Jackson days after his birth.

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The pair will discuss their own fears about their son’s dwarfism and more in Season 12 of “Little People, Big World.” Previews for the season, which is currently airing on TLC, showed Zach having an honest conversation with Amy about his son potentially facing bullying. He worried that the child, who was “measuring below average,” may face hardships because of other kids.

“What am I going to say? ‘Oh yeah, I want a dwarf baby? I can’t wait for that kid to be bullied,’” he confessed (via People).

Tune in to “Little People, Big World” Tuesdays at 9 p.m. EDT on TLC.