Time is your friend. I've never had a beer ready in 11 days. I think the quickest I've ever bottled is about 2 weeks with a wheat beer.
I don't even take hydrometer readings untill three weeks have gone by with the exception of german hefes with Wheihenstephan yeast.
Wait at least a full two weeks, then take a reading. Wait three more days, if reading is same, you can bottle.
Do not repeatedly keep taking readings. No reason to, and you just open the door to infection.
Keep a spray bottle filled with star san and spray your thief with it before sampling. Do NOT return the sample, Drink it or toss it.
I'm repeating this, but time is your friend. It is very hard to make a mistake by waiting longer, but VERY easy to make one by doing something too soon.
If you have a nice tight fermenter/airlock seal, the airlock bubbles are a indication of general fermentation activity, but that's it. To insure a positive final gravity, you need a stable hydrometer reading.
Now, to be certain, much beer has been brewed without a hydrometer by simply letting the beer sit a long time to make sure fermentation is complete, but this is in no way optimal. But it worked for a few thousand years at least!
Pez.