Unfortunately, unless you're charging premium prices, you'll need to get a little uncomfortable
I charge £50 per 1000 words, so I'm not sure if that's considered as "premium" or not. However, that means that I earn £100 per day and I take 2 days off per week. I'm lucky enough not to have to pay for a mortgage or rent, so the £500 per week that I make easily covers bills, groceries, and leisure activities, allowing me to save around £1000 every month. If you're charging similar prices and doing 6000 words per day, my goodness I'd love your bank account :) Also, maybe you have more commitments than I do. I could write more in a day, but I prefer to stop when I know I've reached the end of my peak. Of course, if the topic is one that I'm familiar with, I can easily squeeze in more per day.