We've been working on this for months. Just when I was convinced sign language isn't for Dylan, a lightswitch somehow got turned on as he now clearly understands and uses "more" in context. Context in our case really means it only applies to berries (so far). Regardless, we are so proud of him. Now, we can work on signing "Eddy out", "swimmer", and "equipment in the water" and we'll be ready to train him to become a river guide.
OK, maybe not just yet. We'll work on "thank you", "thirsty", and "hungry" next. Then, we'll talk about the river guide thing.