It says it takes up to 24 hours but I’ve been stuck on this message for well over that:
Confirming pointing
However, dns propagation suggests that the domain pointing is now complete and it 's correctly pointing to the new A record, so not sure why my account is stuck on this message.
This seems to have since resolved itself. For some reason within the control panel/login area it was only asking me to update the A record, but not the CNAME record. At some point later ( a few days or so) that information then changed to only tell me to set the CNAME record. So I may have missed that. Either way I think the information should display all the required DNS record changes from the outset to avoid any confusion.