How to disable wireless backhaul?

I am currently having a 6 Deco S7 setup. They are all connected to a Cisco C3650 switch - creating an ethernet backhaul, operating in access point mode. The wireless backhaul creates MAC flapping between main Deco's port and the satellite's port on the switch (traffic can go from satellite -> switch or satellite -> main -> switch) and degrades network performance significantly. Is there any official way to disable wireless backhaul or I have to workaround by blocking satellites' MAC on main's port?