Thanks. Fortunately I've a static IP.
( Your ISP should give you at least a /56 : https://www.ripe.net/publications/docs/ripe-690 )
I guess this depends a LOT your ISP, and especially the router they gave you, how much IPv6-only friendly are they ?
Yes, you can buy your own router, but this come with even more complications and potentially negotiations with the ISP.
(And to be extra clear, this question mark indicates a question, albeit a rhetorical one.)
Even funnier that you think you'd even be accessible if you put your website on IPv6 only