Wifi repeater using 2 routers

Hey there! I'm trying to do something like that as this is my cheapest option to extend my wifi coverage.
My setup would be using 2 xiaomi gigabit routers, one as my main router, and the other one to connect to the main one and extend the wifi. This model has 2 radios so one would be used to connect to the main wifi and the other one to extend the signal. Is this setup supported? Is as easy as connect one radio to the wifi and give the other one a new wifi?


(See diagram for reference)

Thanks! I will try it and report !