You're correct, he actually overdosed roughly a year after his first use of heroin, not a month like I remembered:
>I overdosed on a combination of (mostly) fentanyl, plus I had a lot of diphenhydramine, pregabalin, temezepam, and maybe some lingering oxymorphone in my system. I stopped breathing with several fentanyl patches in my mouth (they were previously used and I thought they had much less left in them) partially blocking my airway and would have been dead dead if I was found 10 minutes later according to EMS. It took multiple shots of Narcan to revive me.