I just feel like I’m going to break 😅
Blimey, that's alot! I have no words of wisdom but it sounds to me like you're doing an amazing job. It's absolutely fine to regret our choices sometimes but your love for her will see you through. Perhaps voice to your parents that you could do with a bit of child free time where you can just go a veg out, r&r etc?
She does go to nursery and my parents are hands on, but they have their own issue to, so can’t help 100%. For example mum took me off her to bathe and feed her but my time off was helping my 85yr old dad. I had no rest, I also worked a full day of work. Plus it was my birthday 😂😅