Any advice for a parent or things to look out for?

My son started Accutane yesterday. We were going to bring it up at his f/u appointment bc three months of a whole regimen did very little. She walked in and said “do you want Accutane?” I’m so glad he’s doing it. I almost did it as a teen but backed out bc of the side effects. Now I’m 49 and still have acne and I don’t want that for him. My biggest concern is mental issues. He has a history of anxiety and depression. He went on meds and did therapy for years and is now in such a good place. No longer using either. But he’s the kind of kid (he’s actually 18 but just graduated from high school last week) who sucks it up rather than asking for help.

Did anyone have mental issues, and if so, how did it make you feel? How soon did it start? I just want to keep an eye on him. He’s not moving out until august so I need to watch him for the next 2.5 months. Any and all info is appreciated.