Originally Posted by
monkeys
The pictures if used regularly, can help him. They give him a concrete means as to what is being asked and potentially what he is asking for. Words are not concrete and as soon as we have finished saying them they are gone, the picture would still be there.
His talking even if it is off topic is his way of communticating with everyone, it sounds like he understands that if asked a question he needs to answer. But, his thoughts become jumbled with his thoughts or possibly a question that was asked earlier.
Initially, it would be you giving him the picture and telling him its time to use the potty. It may take a while, but it gives him another tool to use to clearly express his needs.
Using a combination of the ideas given by all, will help. A pull up over underwear, waterproof pants, heavier underwear, putting the toys away to be cleaned if there is an accident, set potty times (I use transitions to new activity times, school run, meals, outside play, etc.,) and pictures, are all great ideas. Toilet training is hard for some children, they need more time and effort one our end to help with their success.
I wish you luck, this sound like a tough one.