First, make sure your crystal lamp. Unless required by design, it is not recommended to use multi-party crystal lamps for personal use. It consumes a lot of electricity. Moreover, the small crystal lamp head is a bit troublesome to clean up:

The solution is to find an electrician (if a professional electrician can understand it differently) to connect the lamp wires inside the crystal lamp in series and control the lamp with the switch on the wall, so that you can switch to the brightest gear, but the disadvantage is that you can't switch it any more.

If you feel trouble, change the light.