Hi, My child had a problem with going to the toilet after a reaction to antibiotics, he then got a hang-up about going, so along side taking lactulose I would encourage him to sit on the toilet with a book and get him to relax, and then try to push, we did this before a bath at bedtime, he might only go a little but lots of praise and encouragement, it did take time but the key is to keep the routine going. Hope this is some help good luck