OpenVpn start-up on Openwrt

Hi, I installed an OpenVpn client on Openwrt 21.01. I use a custom smart dns on my LAN interface of my router.

Now in order for me to get my OpenVpn working and loading webpages, I have to remove each time that custom smart dns from my LAN interface.

So my question is if there isn't an automatic option to have my smart dns under LAN section being ignored each time OpenVpn start up?

Or do I really have to remove my custom smart dns each time manually when I want to use OpenVpn?

My OpenVpn uses custom dns from WAN interface. (or atleast that's where I had to put in custom dns as per tutorial for installing OpenVpn)

Can someone help me with this?