Ceiling light/fan remote problem
Some fan manufacturers make after-market remote controls that can be attached to non-remote-controlled fans. (I have 2 installed.) Here is a link to one made by Progress Lighting. https://www.progresslightingexperts.com/lighting/7-196-826-0-220446/Progress_Air-Pro---Fan-Light-Remote-Control-P2618-01.htm. While my fan was also switched (just on/off), it's light and speed were controlled by pull cords. I put the remotes in to allow control by remote instead of pull cord. Just make sure there is room in the fan for the receiver.