Sleep struggles due to sensory

Sunny

Hi all! So my 18 month old struggles with emotional regulation and has autistic characteristics. Due to this, she is unable to self-soothe no matter how many attempts we have tried. She does have a white noise machine, pacifier, blanket, same bedtime routine since she was 2 months old etc. A good night is her waking up 2 times a night, a bad night (like tonight) is her only able to sleep 5 hrs and the rest needs to be in our arms. We are unable to try cry it out as she simply doesn’t understand the concept of self soothing.

If anyone has ever been through this or has any solutions it would greatly help our family !!

Ps. We follow the 7am wake up, 12-2 nap, and 7:30 bedtime. She does struggle for bedtime but doesn’t for nap.