I've had that wedge yip problem for years. I think I have it under control but I will admit it comes back and bites me occasionally. One thing I did not see mentioned that should be tried is -- hitting wedge shots with your eyes closed. This works very well and is much easier than you think. You will not yip a shot with your eyes closed (also works for putting yips). I've even played in a minor club tournament doing this. You may not hit it close but you will get it on the green. Eyes closed help you relax and then, hopefully, you can build on that. Anything that helps you relax is what you're looking for -- it can be a much longer swing (most pros argue against that), a very wristy swing (pros don't like that either), or something else. Just thinking R-E-L-A-X is not a bad place to start.
That's interesting.
I tried it for putting and it helpsed me develop good feel with my eyes closed
It also may me stop looking at the putter head to intently
Never consider it for pitching/chipping...but I'll try it thanks