Adrian must have been busy acclimating to being a father because he didn't end up getting back to Nathan. He didn't blame the guy one bit. He knew how exhausting newborns could be after raising his sister by himself until they went into foster care.
When Lisa asked, he told her he was on a waiting list to get an appointment that was covered by his insurance. It wasn't that much of a stretch since he was waiting for something.
In the meantime, he got back to work on his latest novel and did his best to stay inside and away from danger. He couldn't stop himself from acting on a vision if he had one but the least he could do was try to prevent them from happening in the first place as much as possible.