Virgin Broadband Static To Dynamic IP Easy?

[Rizwan]

I currently have Virgin Business Broadband on an old Grandfathered contract of 350mb with 5 static IPs (as 1 of the services I used for work at the time needed a static IP to work with cable Broadband)
I only ever used 2 of the IPs in the end and I am now vastly over paying for slow speeds as they currently over 600mb for £20pm less than I pay
My set up is supplier cable router provided for Static IPs is in "modem mode" and all my router capabilities including WiFi all handled by my Asus AX86UPRO

I have 2 options:
Switch to a normal service with offers a dynamic IP - but i will need to ask if the modem they provide for this can be put in modem mode or ask for the service with 1 static IP into my Asus router to handle everything as it does now and run my other service out of this (instead of as the 2nd static IP - this is feasible according to IT of this company)

My concern is:
How complicated is it switching my Asus AX86UPRO from Static to dynamic IP assuming i go that way? Will I have to redo everything in settings (including the mesh i have set up with a 2nd router on wired backhaul) or is is just a case of changing the Wan settings and everything else inc DHCP etc all stays the same?

If I get the sefvice with 1 static IP I just have to enter the new IP details? (I am assuming they wont let me keep the same IP I have but I will ask)
Im out of depth with this level of detail and need to make this change with minimal impact on home connectivity so all help appreciated

 

[ColinTaylor]

For the normal domestic service you just change the WAN Connection Type from Static IP to Automatic IP (i.e. DHCP). That's it. No changes need to be made to the LAN.

You might also need to power off the VM Hub for 10 seconds or so and reboot the router when they switch you over.

All the VM Hubs supplied to domestic customers can be put into modem mode.