On her Instagram account, the 25-year-old actress shared photos with their eldest child Zion during a recent trip to Hawaii.
She captioned it with an update on their highly-anticipated wedding.
The StarStruck alumna wrote, "As we officially prepare for our wedding next year, I can't help but feel grateful for this life I have, for my beautiful and amazing family, for my best friend who also happens to be the love of my life.
"I thank God for all the lessons, for His guidance and for growth.
"Being able to experience new things and places with the person you love and grow at the same time is something magical. I thank God every day for what I have and for what's to come."
In an interview on the Kapamilya morning talk show, Magandang Buhay, on December 13, 2018, Sarah and Richard first revealed their plan to get married in 2020.
Sarah and Richard got engaged in March 2017 with the majestic Zermatt in Switzerland as their backdrop. The couple, however, had to postpone their wedding to a later date due to Sarah's pregnancy with Baby Kai.
In their interview for Magandang Buhay, Sarah also confirmed that they already started planning their wedding last year. She further revealed how hands-on Richard is with the wedding planning.
Sarah narrated, "Bigger details, nandiyan siya to organize with me. Ang hirap kami ngayon ay yung in terms of making it intimate, ang laki ng families namin."
Asked how she felt now that they're planning their wedding, Sarah answered, "Masaya na nakaka-nerbyos na exciting yung process of organizing a wedding, but we're super excited mostly."
Sarah and Richard first confirmed their relationship in 2012.
They now have two boys, Zion, 6, and Kai, 1.