Hi,
After reading this topic I began to look into my own way of making a button for the lights. This is a really long way of doing it but it works. This will require a amazon dash button and a Raspberry Pi.
First set up homebridge with Raspberry Pi:
Then set up your button using the video below:
I did not make any of the links that I have provided I just found
The way to have a button to work with Yeelight.
Hope this helped and if you have any problems feel free to aks!