For my not so warm white CCT LED strip I found the DTH of the “ZLL RGBW bulb” somewhere and I changed the lower limit of warm white from 2700K to 2000K.
Tried to upload the DTH but it refused to run locally, I had to set that to false.
Now the LED strip shows the correct color temperature range, from 2000-6500K
Renamed the DTH to -remote to prevent conflicts