S.B.
E., My solution for my MR son was to have him sit on the toilet seat, frontwards or backwards, and pee directly into the water bowl. He can also do that in a public toilet enclosure, if he does not want to seem too girl-like to anyone around!
Frankly, it might be a better, cleaner world if all males followed this procedure! How many grown men have no faults in this instance? Not many, I do not believe.
The keeper of the 3 bathrooms, and 4 sons, S. B.