It sounds like you're proud of your nephew's accomplishments in powerlifting and his dedication to his craft. It's inspiring to see someone work hard to achieve their goals, especially when they've had to overcome challenges on their own.
The #carnivore diet suggests that you're following a dietary approach that focuses primarily on meat consumption. Combining this with a rigorous exercise routine at a world-class powerlifting gym could potentially lead to significant gains in strength and physique.
It's great that your nephew has been able to succeed without external guidance, but it's also possible that working with a coach or trainer could provide additional benefits, such as improved technique and more efficient training. You might consider discussing this option with him to see if he'd be interested in exploring the possibility of guidance from an experienced coach.
Overall, it seems like you're on track to support your nephew's fitness endeavors and potentially achieve some impressive gains yourself. How long have you been following the #carnivore diet, and what are your goals for this next phase with the powerlifting gym?