/diy/ - Do It Yourself

Just put a 5 gallon batch of apple-bochet mead in the carboy.
I boiled 12 pounds of honey for about an hour before adding 3 gallons of water, and a gallon of frozen apple juice concentrate.
The starting gravity was 1.08, which seems a little low.
I'm using EC-1118 yeast and I added raisins and Lipton tea for nutrients.
It's been 6 years since I made a batch where I paid attention to the gravity. And I don't remember what numbers I've had in the past, but 1.08 sounds low.
Online calculators seem to say I'll top out around 10.5% alcohol, and my old stuff was about 14% ABV.

Any ideas? Am I going to need more honey or sugar to get up to 12-15% ABV?