Prune juice and a good long soak in the bath!

Also, we found that the whole potty thing confused DD no end, (she'd use any small round plastic container she could find) and did away with it and went straight for the toilet. This worked a treat especially as we had a couple of little friends who were quite happy to show off their skills in this area, so DD was happy to copy them!

He'll get there, no such thing as a step backwards if it takes the pressure off!
:-)