Facebook groups might help you here.
they have saved me for years
my kids have numerous disabilities each and neither sleep, they are 19 and 13 but mentally years behind
ive never had a babysitter and neither have slept out overnight
i haven't slept properly in 19 years as both need 24/7 care and the asd and sleeping disorder(separate diagnosed bot just a asd trait) both have was obvious since birth
i also home educate so get zero break as i was forced to be a lone parent by dad in 2020(note lone not single as dad has zero coparenting)as he left us for my ex best friend and hasn't been involved since. he literally left in the middle of the night before that he did 24/7 like me
i ended up having a emotional breakdown(kids were diagnosed with trauma as well caused by dads abandonment) because of it as we were together 22 years, not unhappy or struggling just a normal relationship but with 2 disabled kids
before that he was a perfect partner and dad so his choice came as a massive shock
i also get zero help from family or professionals
its all down to me to heal myself, the kids and deal with everyday disabilities
i get my support from parents who under stand each condition and what lack of sleep does
im also in a nervous breakdown group and a lone parent group, same with home ed as well
in life i have zero close friends as i cant go out and no longer trust anyone but hundreds online
i was diagnosed with my breakdown and sent away the same day
not given anything as i wasn't depressed, mine was caused by extreme stress, betrayal by the 2 people i trusted the most, trauma and mental burnout
ive helped heal my self from herbal remedies and help from support groups and tiktok videos