I have four, who are now 12, 12, 8 and 2.
I worked full time until a year ago, when I felt I had no choice but to stop completely. For a lot of that time I was also commuting 2 hours each way, but that became impossible once my eldest two started school.
I managed by flying by the seat of my pants. I ran on adrenaline and stress and anxiety for more than 10 years, and felt like I was underperforming at home and at work. I massively struggled with meal planning/shopping/cooking, general housework, and putting clothes away. I managed, and we're all alive, but it wasn't really living.
Before completely stopping work, I considered a job share/part time arrangement. I decided I couldn't manage that because work, for me, is as much the brain burden of responsibility as it is the hours you are physically there. I needed a break where "home" was my only responsibility.
I miss work terribly. I hate being only a mum/wife/non-working person and miss stretching my mind and sharing opinions and making progress with projects. At home I have to put in all that effort and no body appreciates it, and it all needs doing again tomorrow. I hate the lack of tangible progress and have to remind myself that my kids growing into happy (ish!), healthy, people is my tangible output.