Did read it after I got out.
Still feels weird. I had a portion of that typed out saying I understood the why, but when I went to condense I must've deleted it. I think part of it goes back to having the ghost of Han coming back to tell him to do the right thing. I didn't think Han was force-sensitive, but maybe his ghost was some representation of the light side of the force coming to Ben after Leia died. It seemed like the turnaround happened fairly quick, but will acknowledge it's been a while since I watched Ep VII and VIII so I may be overlooking some other little hints at him still having guilt or whatever amounts to that for turning to the dark side.
100% that was supposed to be
Carrie Fisher. Her death had a huge effect on ROS. The filmmakers did what they could to salvage the story, but they definitely had a difficult task.