Hi all. I have 3 huawei mesh HG6145F3. How do i connect them via ethernet backhaul? I've connected them first using mesh from the 2 mesh to 1 main, then connect both via ethernet to the main but somehow, i keep getting no internet at times and have to restart the main like there's some conflicts happening.

Then i tried connecting 1 mesh to the main, and another mesh to the first mesh. After few days, i still got randomly disconnected. So how do i connect them actually? Tried using switch after the main but the mesh does not identify as mesh anymore. Helpp