MSSA, there is no way of knowing when things will slow down for you. The variables are endless.
It all depends where you are, how much time a week you have to work, how long you stay in the agency's "good books", when the next pretty girls starts and takes away your newbieness, the time of the month for the guys with the money, the time of the month for you, how long your period lasts, if you can work through it when you are on your period, your state of mind. Remember, don't take on too much for too long without breaks of a few days between if your head and your body tells you you need a break.
This is just the tip if the iceberg, there are so many other variables too, but it lets you see that most of it is out with your control and you just have to go with "the flow" and make it while you can and remember to save for a rainy day when you are not working as well as all the other bills too.
In years gone past we could easily make a grand a day and think nothing of it, that doesn't happen so much now though, if at all.