I doubt that.
How much traffic are you sending daily and when did you start?
PPL or revshare?
I think this was said quite a few times already, but if you're doing revshare, that isn't a sprint. I have guys who started to spend money half a year after they registered.
If you send a low amount of traffic to revshare, you cannot judge it objectively imho. What's a low amount? I'd say which generates only 5 or less free regs per day. Let's say, if you pull around 15-20 free regs a day, you can expect a nice return in 2-3 months time.
It depends on luck too, but at the same time, it's a numbers game as well. The more traffic you send, the more free regs you'll get, so your chances to someone start spending increase.