Each laser session will remove around 10% of the hair, however even on larger areas you don’t really get any visible results until at least the 3rd treatment or so. Meaning if you’re done too large an area once or twice and stop now, you’ll never even notice a difference most likely, if anything it may be slightly thinner in that spot but shouldn’t be noticeable at all. If you keep doing sessions every 6-8 weeks for a year then in a year yes you’d have a big gap as you would have had many sessions over the year to kill all that hair.
The point is if you stop right now you’ll be fine and have no issues. You will experience 4-6 weeks or so of a big gap there though starting about 10-12 days after your last treatment, as that hair will fall out, and you’ll be hair free until the next cycle begins.
So having a big gap for 4-8 weeks right now is unavoidable. I’m not quite sure what your question means though talking about november. If you did the session lets say November 1st, the hair will fall out around November 10-12th. You’ll have a big gap there probably until mid to late December then it will be back and normal. If you keep doing sessions over and over, then by November of next year that gap would be permanent. The point is you can’t avoid the gap that’s coming any time now, but it won’t be permanent unless you for some strange reason keep doing laser on your eyebrows. You need to stop doing it there right away.