Jenni 'JWoww' Farley shares an emotional message on her son's birthday as she details his progress.

On her son's third birthday, Jenni "JWoww" Farley has a lot to celebrate.

The 33-year-old mom took to Instagram where she shared an emotional birthday post speaking on Greyson's progress. She provided an overview from the time he was born up until his birthday on Sunday.

The reality star posted a picture of her son in the hospital. Jenni said, he was the "perfect son from day one, so delicate and sweet."

Farley added, she couldn't imagine life without him and his 4-year-old sister, Meilani.

The TV personality continued, "You slept on my chest until you were a year old because it was the only way I could calm your chronic cough... yet, I needed that more than you needed me because hearing your breath every night calmed me."

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During an episode of 'Jersey Shore Family Vacation,' Farley revealed Greyson had trouble understanding things while he could barely speak at all. Back in November, Jenni went on to reveal her son was receiving speech therapy after he had been diagnosed with autism.

The Jersey Shore star continued in her post, "Today you turn 3. This past year flew by so fast. I had you start early intervention 2 days after your second birthday."

Farley added, "You didn’t know your name, you didn’t know how to say mommy... as you turn three, you know countless words, call me mommy 10394 times a day and your smile has grown 10x."

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Snooki & JWoww star also posted a video from Greyson's birthday celebration. The boy looks responsive to his mom's questions as he blows out his birthday candles.

"To my perfect son, happy birthday... I’ll continue to hold you every night until my last breath," Farley ended the heartwarming post.