Thanks. :)
The next step is a full sentence, even if it's only 3 words. His mom and I have talked about how we're certain he'll remember a time in his life when he remembers learning to speak. We thought back and neither of us can remember what it's like to be unable to speak, or even understand what someone was saying unless we refer to unfamiliar languages. However, we DO remember not being able to read, and we're pretty sure he can read a little - at least familiar keywords, probably not full sentences. So we wonder if he'll remember knowing how to read before knowing how to speak.