Yes,but I don’t want to reboot AP ,I need renew ip addresses for the AP

I had edit ip helper address in router and I want to renew ip address by manually without effect service

Before my client use Cisco router as DHCP server , now he wants use HQ DHCP server offer branch AP IP , I know reboot AP can get new IP , but it can not be reboot which user will lost connection what can I do without lost connection ?

its registed to controller and mode flexconnect Branch AP use