"It brings me so much joy to watch you grow as a brother, son and father," Kris Jenner gushed on Instagram

Happy birthday, Rob Kardashian!

The reality star turns 30 on Friday, and as per tradition, the Keeping Up with the Kardashians matriarch Kris Jenner was up bright and early to celebrate the milestone on social media.

“Happy birthday @robkardashian!!!!” she captioned an adorable collage on Instagram with photos of her son throughout the years. “I love you more than words can say. You have the sweetest soul and the kindest heart, and I am blessed beyond measure to call you my son.”

“I am so proud of the man you have become and it brings me so much joy to watch you grow as a brother, son and father,” she continued. “There are so many blessings in this life, but being your mom is one of the greatest. I love you!! #HappybirthdayRob.”

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Rob’s sisters also took their respective apps to wish him a happy birthday, sharing adorable pictures of the family from back in the day.

“Happy Birthday to my one and only Robbie!!!” gushed Kim Kardashian West, 36, on her app. “You are the best dad, brother and friend. I love you so much and I hope you have the best birthday ever!”

Credit: Kim Kardashian West

“Happy birthday to my little brother and best friend!” wrote Khloé Kardashian, 32, on her app. “I’ve loved watching you grow up and become an incredible father to Dream. I’m so proud of you, Rob! I can’t wait to see what amazing things this year has in store for you.”

Credit: Khloe Kardashian

“Robert, I love you so much. I have the best memories of us when we were kids,” wrote Kylie Jenner, 19, on her app. “Happy birthday, big bro!”

Credit: Kylie Jenner

“Relationship goals,” quipped Kourtney Kardashian, 37, on Instagram, sharing a picture of her and Rob on vacation with her son Mason. “Bob, Bob…Happy Birthday Bob!”

It’s certainly been a big year for Rob: The star, who has struggled with depression, weight gain and type 2 diabetes in recent years — proposed to Blac Chyna, 28, in April 2016. A month later, the two announced that they were expecting their first child together, and they welcomed daughter Dream in November.

By February, PEOPLE confirmed that two had called off their engagement, and while he may be going through a tough time in the wake of the split, Rob’s focus is on his 4-month-old daughter.

A source told PEOPLE Wednesday that while Chyna is “giving pushback,” Rob wants dual custody of their child and Jenner, 61, is doing everything she can to support him.

“They are still figuring things out but [Chyna] will certainly do whatever it takes to have Dream be with her for the majority of the time,” the insider added. “Kris is backing Rob up 100 percent and won’t let Chyna get away with anything that’s less than fair.”

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And Jenner isn’t Rob’s only source of support: His sisters are completely behind him as he learns to navigate his new life as a single dad.

“The entire Kardashian family is there for Rob as well and supports him wholeheartedly,” the source said. “They are prepared to protect him in whatever way they need to.”

Keeping Up with the Kardashians airs Sundays (9 p.m. ET) on E!