How do I shift my bedtime window?

I want to shift my wake up time from 7:30am to 5:30am. Have any of you had success in doing that? What worked for you?

My details:
I have been on BiPAP for about 4 months with pretty good adoption - I use it for about 6 hours a night though I've recently developed a bad habit of falling asleep without my mask since I've lost 25lbs and wake up groggy after 2 hours and then put it on.

I go to bed around 10:30pm and can't shift that time much yet, due to my toddler's current sleep habits. We are working on it.

My why:
I'd like to take some time for myself and build a daily workout routine to build muscle and accelerate my weight loss.