Extremely fed up, I need advice

I’ve been at Michael’s 3 years, we all know it sucks so I will skip this majorly in the story . Anyways I have a profoundly autistic child, psychically 12 but mentally around 3. I usually have help for this child every single shift no matter what that is my #1 priority as a mother.

But the thing now is that I won’t have the help and watchful eyes this weekend and it has honestly been weighing on my mind because I work Fri-Sun all closing shifts.

I texted my ASM about this first then I was referred to speak to my SM, okay cool right? no

Also I cannot forget a very important detail that I don’t wanna forget to leave out because after telling a few people they all decided this behavior has something to do with it but I went back to school to nursing last year, when I got pregnant first I was also in nursing school and obviously dropped out. So I decided why the hell not I need to do something with my life plus I only had a handful of classes left, I took the classes took my nclex and I passed 🎉 I started applying to nursing jobs immediately and just a week ago I got a offer I accepted. Since I love working with my co workers so much I decided to limit my availability while still working. Which now I’m realizing is a horrible mistake if you have petty managers

Anyway I texted him telling him about this and not Ingrid I get brushed off ( they have known about my autistic kiddo since the day of the interview ) I was told that I can’t call off in short notice (mind you it’s Monday) and that I will need to do all 3 shifts. I can’t even leave early or find coverage so that I could.

I am honestly kinda pissed off by this whole thing and honestly me telling the DM / HR is pointless because the DM is buddy buddy with him I’ve bent over backwards for this fuckass job when I didn’t and shouldn’t have had too. And the moment I can’t be available for a OBVIOUS reason I am being brushed off

And I’ve been told by several people put in my two weeks and or just ghost , I stay in a small ass town everybody knows everybody and word gets around quick so now it’s being retold that my manager is ableist which I don’t think so. But I do think he’s being an asshole

What do I do? Sorry for the long read