Home button unresponsive (not stuck)

I have an iPhone 6S with it’s home button not working. The home button is normally clickable and clean and TouchID works fine, but the click itself don’t registers any clicks.

I tried to remove the home button module and clean it with alcohol, it worked for about an hour and then it got slowly unresponsive and after a day it got again completely unresponsive. I think it has to do with the contacts on the “clicking” part of the home button, maybe it has lost it’s conductance.

Any ideas how to fix it? (Of course I want my TouchID, so replacing it isn’t an option).