NO! It's absolutely NOT TOO EARLY.
Bucks will breed any available doe at any time. In addition, the ovulation of doe do not occur all at the same time. It starts with just a few doe as early as mid-October. The dominant bucks lock onto them almost immediately, breed them, then find the next one. As we move further into October, a few more and a few more doe ovulate. Into November many doe are ovulating, this is when people consider the "rut" to occur. Bucks are moving around more because there are more doe available. This then slows to only a few doe ovulating, and the ones that were not bred will ovulate again in about 25-28 days.
It's unfortunate that many hunters lack the knowledge in basic reproductive biology to understand the actual way it works.
So 1. It's never too early to use doe in rut. Bucks will breed anytime a ready doe is available.
2. Don't expect bucks to respond positively to your scent. They generally don't work, at the very least they don't work at all like advertised. Bucks won't come running in. Most bucks won't pay any attention to the scent because it simply isn't vaginal secretions, it's urine. The objective of deer lure companies is to sell deer lure to hunters that don't know any differently.