If he was just activated today, I think that's entirely way, way to early to make any impressions on the outcome. Give it time. I'm sure others with first-day-of-activation results will post here too. Come back and check on that.
I'm with PFH that I hope sign language was started as a form of communication. If he's deaf enough to qualify for a CI, then his level of hearing has deteriorated to the point that sign would be really helpful.
