Stop here if repairing Switch Lite for joycon drift. After removing daughter card you can see the bottom of the joystick. This thin metal actually bends during use causing bad connection of joystick. If you cut out a business card the same size as the joycon and put it on the bottom of the joystick it gives the metal enough backing to fix the issue. I used two layers with just a small bit of glue stick to adhere it. Put it all back together and you will find your issue is fixed.

Why even disconnect this cable. Not worth the risk leave it connected to daughter board.