Yes he has had problems in that department before, he just cant eat bananas or it really stuffs him, liz has a liquid from docs if he gets constipated.
Her eldest son jack, was potty trained at two and was also dry through the night really quick (miles away with that one for harry although he did well potty training in day time). So it must run in the family. He is doing grand if he isnt busy but as soon as he is playing with Harry he forgets LOL, think once he has had a couple of accidents he will get better.
Liz said he hasnt been so bad in trying to strain quite so much every time now, so hopefully he has understood now.