To use a router to connect to another router via wireless it must have a feature called client-bridge. Many times they call this repeater but when you do not want to replicate the wireless signal you only need the client-bridge part. You are going to have to dig through the manual and see if it has any of this type of option.
You can get a dedicated device to do this they are generally sold as gaming adapters or media bridge. You can also get repeater just be sure you can turn off the wireless part since it degrades the wireless signal and when you do not actually need the wireless replicated it is silly to degrade your signal for no reason.