Samsung Connect Home Pro / Smartthings Hub

Until recently, I was using the Samsung Connect Home Pro / Smartthings Hub (3 of them) as my home mesh network and smartthings network. I have upgraded my home mesh routing/wifi with another brand. I would like to keep using my smartthings as is. Is there a way to plug the old main device into the new network but turn off the routing and wifi capability and just use the smartthings hub functionality?