Are you fully booked most of the time?
If not, or even if you are...
You can reduce your hours! Its surprising how well clients fit in around what you offer them. If you didn't offer a Thursday they would take a Wednesday or Friday.
If you are fully booked & cramming everyone in, raise your prices. You may loose a client or two, but you'll be earning the same amount of money so working less hours.
Ive had to ask one client to wait a week & a half due to not having the set time available. She always leaves it til last minute to book, which is why I cant give her the desired time quicker, I offered an alternative which she didn't want. I could have offered her my day off, but I wont do. I need a life.
We work to live, not live to work. If it appears you have a quiet week, make the most of it. Give yourself a certain day off (or two) & a late start if you have a late finish.
My evenings book up really quickly, so I try my best to work backwards from there if I am booked up from 6pm Il offer the next client 5pm, then the next 4pm & so on. If I'm in a certain area & a client calls I will suggest the day I am already in the area.
As Ive grown my business, Ive had to become firmer. Otherwise I could be running round like a headless chicken trying to please everyone, Ive raised my prices & will cross out a day if its quiet & I fancy a day off.
If it is a quiet week I will make the most of my quiet time.
If it was a quiet month Id be worried
Xx