Yes, My RAH is still acting like a teenager, sober, but when he was active it was an unapologetic, full blown age regression.
He started drinking at age 14. They say that is when their development gets stunted.
Mine eased into the disease, over years, but...Even with a few adult skills to fall back on, he will pull out the adolescent ones, because they work better for him sometimes.
This is pretty common. Like alcoholism 101.
No fun. I always used to say, "I would not have to police you if you had the ability to censor your own actions, and police yourself. "
like a teen.