You can’t, not without lowering your expectations. I was shocked at the difference it made when I went part time to full time. It’s impossible to keep house, home and sanity the same on full time work as it is part time. Squeezing stuff into my lunch hour meant I never had a break as that could be the only time I stopped all day until bed time.
So first I learned to ignore what wasn’t necessary and decided some things weren’t important.
As little ironing as possible, dettol spray and cloth for wiping surfaces means cleaning happens less. simple meals, slow cooker and making more when I did cook and batch cooking when I could. I got a taste for frozen veg.
Box at the bottom of the stairs to put stuff in to take up later and half an hour before bed making sure I had everything at hand for the morning. I am organised but I can never do things in the time many Mumsnetters do, 3 minutes for make up, a quick 2 minute tidy, etc
Buying in help works if your net wage covers their gross, my travel costs increased, my childcare costs increased, even my work expenses increased. The cost of a 2 hour clean is worth every penny though, I seem to gain more than 2 hours by paying for this.
I do as much food, clothes and gift shopping as I can online.