I just got the Chameleon a few days ago and have been having problems since I started. I figured out how to use Prusa Slicer (I normally use Ideamaker) and I put in the auto generated gcode in the tool change section. The tip shaping is just not working properly. I was able to tinker with it enough for it to be removed and slide back in, but it becomes too wide to fit back into the hotend after about 5 layers. The ramming function is not working well either, there is always a string about 2 inches long on every tool change. I use and Ender 3 pro with the Micro Swiss Direct Drive with Hotend upgrade. I tried to use what another post with my setup said for the same problem, but it did not work. Can anyone help?
I suggest you try and iplement the 3D Clippy. It cuts the filament and my understanding is the cut piece is pushed through the hot end by the new filament. This is one of the challenges that I looked at, but never got the feeding to work correctly. There are a number of designs for Creality type printers