It says to bottle condition for 4 weeks. I just tried one after 2, and it had great head with great head retention, and it tasted great. I don't think I can wait another 2 weeks to see how it turns out.
I don't think you have to wait 6 months to bottle. The instructions say you can bottle after 2. I bottled the day before yesterday but it's still way too hot to drink. Maybe bottle and wait another 6 months to drink.
You can also make your own vanilla extract with vodka and vanilla beans. You'll need at least a dozen beans per bottle of vodka, but you can get the beans pretty cheap online. I use a company called Beanilla.
I took a taste on 1/22 and there was a slight vegetable flavor so I racked the mead off the hibiscus flowers. I checked the gravity a few days ago and it was a smidge below 1.000, maybe .97 or so. I figured I would give it another try since I had some in the hydrometer tube anyway, and I tasted...
I checked today, and it is at 1.003. I rack it off the hibiscus in another week, and I will take another reading then. It is dropping a bit faster than expected, but but may be right on.