Duggar Sisters 'Can't Believe It's Joy's Time to Kiss' on Her 'Big, Big Day' with Austin Forsyth

Joy-Anna Duggar‘s big day is finally here on Counting On, and her family couldn’t be more excited!

In an exclusive sneak peek at Monday’s season premiere, the Duggar sisters are eagerly prepping for 19-year-old Joy-Anna’s wedding to Austin Forsyth.

“Being here in the bridal suite while all the girls are getting ready, definitely takes me back to my wedding day,” says big sister Jessa (Duggar) Seewald. “It makes me reminisce about all the sweet memories just hours before my own wedding. I know the excitement that Joy is experiencing right now; the anticipation. It’s a big, big day.”

“Joy is just staying relaxed, she’s not getting worked up,” the 24-year-old continues. “She’s just focusing on one thing at a time and getting ready … before we know it, the wedding will be here.”

FROM PEN: Joy-Anna Duggar & Austin Forsyth Are Married!

Jinger, 23, is also reminiscing on her beautiful November wedding to Jeremy Vuolo.

“It really does seem like it was just yesterday that Jeremy and I were walking down the aisle and about to get married,” she says. “I just can’t believe it’s Joy’s time to kiss. I still remember her as the little girl that I would help out with things … it’s crazy that it’s her wedding day, but we’re so excited for her.”

Luckily, for Joy, the nerves hadn’t kicked in yet, but she is a bit worried about remembering her vows.

“I’m not really nervous yet,” she admitted. “I think everybody has been doing everything for me, so I just need to make sure that I read my vows off with clear words, but other than that it’s not a big deal.”

“It probably won’t hit me, until right before I walk down the aisle,” Joy tells her sisters.

FROM PEN: Former Bachelorette DeAnna Stagliano Is Already Dreading her Infant Son’s Future Wedding

Joy-Anna and Austin, 23, tied the knot on on May 26 in front of over 1,000 guests.

“We feel so happy and so excited,” the couple told PEOPLE exclusively following the ceremony.

“Leading up, it was so surreal until I was walking down the aisle and then I was like, ‘Oh my goodness, it’s actually here.’ ” a teary-eyed Joy-Anna said, adding, “We are going to be traveling for our honeymoon for a while.”

A new season of Counting On, featuring Joy-Anna and Austin’s wedding in the premiere episode, returns Monday at 9 p.m. ET on TLC. For more on the Duggar family, visit DuggarFamily.com.