Well, he certainly isn't baked up completely...that's for sure! He's bouncing back and forth from a teenager to adult, so maybe he's growing up just a wee bit.
As for the landline...does he really need a password to access the number of calls? Did he password it himself? If that's the case, the manual isn't going to give him the password.
As for remembering things, they will remember some of what they've said and done, but not all of it. You, on the other hand, will remember quite a bit of what he's said and done. Don't forget, you've not been asleep as long as he has, i.e., like Rip Van Winkle.
His good nights are reminding me of the Waltons! LOL!
Hang in there. It's going to be very interesting as you move along to the holiday.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
