Alyssa Scott and Nick Cannon are mourning the death of their 5-month-old son, Zen, who passed away of a brain tumor earlier this week.

On Wednesday, Scott shared an emotional tribute on Instagram to Zen with a video montage paired Jhené Aiko's song "Promises," and a heartfelt message written to her baby boy was written in the caption.

"Oh my sweet Zen. The soreness I felt in my arm from holding you is slowly fading away. It's a painful reminder that you are no longer here," she wrote. "I caught myself looking in the backseat as I was driving only to see the mirror no longer reflecting your perfect face back at me. When I close a door too loudly I hold my breath and wince knowing a soft cry will shortly follow. It doesn't come. The silence is deafening."

"These last 5 months we have been in this race together. We would hand the baton off to each other. You kept me going. It would be the middle of the night and you would smile at me. A surge of energy would fill my body and pure joy would radiate from within me," Scott continued. "We were a team, both determined to see it through. It feels unbearable running without you now. I can't."

The Instagram model then added that she could "feel herself being carried" by her 3-year-old daughter and the support of others, who are "encouraging me to not give up" since Zen's death.

"It has been an honor and privilege being your mommy," Scott ended her tribute. "I will love you for eternity. 6*23*21 - 12*5*21."

We are sending prayers to Nick Cannon, Alyssa, and their family.