I would strongly encourage you to explore any GT opportunities you’re offered for your child. Also see what his level of interest is. Whatever route you take, you might also occasionally check in with your son about if he thinks school is too easy, too hard, or just right.
Here are some resources you might find helpful:
Hoagies explores all topics related to gifted kids. It’s an excellent resource I highly recommend.
https://www.hoagiesgifted.org/
Hoagies also has links to websites offering enrichment for all ages and subjects.
https://www.hoagiesgifted.org/links.htm
Tamara Fisher is a GT teacher who had a blog about education that I think you might find interesting on Edweek’s website. Although it’s no longer being updated, past issues are still posted, but I think there’s a limit of 3 free articles.
https://www.edweek.org/teaching-learning/unwrapping-the-gifted
I think she also has a Facebook page and it looks like she’s reposting some of her old articles there and possibly making new entries.
https://m.facebook.com/unwrappingthegifted