So I stumbled on this idea rather inadvertently and thought I should share. Not sure if it's come up before It will most likely help other newbies struggling to break their program and retrain their body to wet in any position.
The Pavlovian response is where you train your body to link two distinct behaviors in this case we are going to link using the toilet with something else. Now it's best to use something which you like (apart from for the obvious reason it will actually work better) and something which has a strong direct link to the pleasure parts of the brain. Taste is very good and a strong smell would be a good second. So let's say you train yourself using mint.
To train yourself for a few weeks every time you use the toilet you put a mint in your mouth and remove it shortly after finish your business. By the end of that eating mint at anytime should give you the urge to go.
Now you use this to give you a push when you need it. So don't push your luck too far put on a nappy and get in the 'easiest' position which you find difficult. So if you can do lying propped on an elbow easily do lying down fully. Now do whatever you can to get yourself in the mood. Then take a mint. This should push you over the edge. The best part is once you break the program a couple of times you should be able to do it easily without the prop.
Well, hopefully useful for someone. Thoughts?