I'm going to apply my civvy street analytical brain to this "is it slow or not" question.
Typically we only see a maximum of 10 clients each per day, right? For many of us, much lower, more like 3-5, or even less.
In my former career as a business analyst, one particular thing I came to appreciate is that when you have low volume of anything - customers, products, phone calls, vehicle traffic - it makes it very difficult to predict volume, and any small fluctuation in volume can feel like a massive swing.
For example: if I normally get 3 customers a day, and then tomorrow I get 6, that's 200% of normal volume - it feels like a huge deal, because I've doubled my volume. But in reality, it's only three extra.
Conversely, if I normally get 3 and then I get zero, OMG my business has died. But again - it's only 3 less.
When you have a small volume to assess, normally you move from considering the volume on an hourly or daily basis to looking at it on a weekly or monthly basis instead. So instead of saying "Oh no, I had no customers today" I just look at my MTD (month to date) figures and say "OK, it's day 7 of November and by now I was expecting to have seen 15 customers. I have actually seen 12 so I am really not too far behind - I can easily make this up by working an extra day this week and/or doing a quick price drop day and bringing in an extra 3 this week, then I'll be back on track."
But realistically for us, we are working in a cash business which is subject to seasonal fluctuations, primarily around school holidays and the notorious mid-Jan blackout. So even a monthly position is not that helpful: we should be working to an annual budget, broken down into quarters, then monthly, then weekly.
And always build in a safety net: if you need 3 customers a day just to cover your monthly bills, then stretch yourself and aim for 4, and put that extra in a savings account so you can draw on it when (not if) there's an unexpected emergency.
Hope nobody takes this as patronising - I've only been doing sex work a short time, but I've been analysing data (and in particular forecasting customer volume) for over 10 years, so it's a strength I really want to bring into this business.