Constipated child

[Allnewtometoo]

Ds aged 7 is really struggling. Have tried addressing with diet, no luck. Just been to the pharmacy, they've given me suppositories for him. He is really not going to be impressed. Anyone know when's the best time to use? Ideally prefer him not to have a poonami at school tomorrow

How long has it been going on? He might need something moving forward as well to help the bowel recover (it can become sluggish and the problem just keeps coming back). My ds had movicol prescribed by the gp, continued with a slowly decreasing dose for quite a while.