My son has been potty trained since he was aged 2yrs & 8 months. In the last few weeks he has started pooing in his pants on almost a daily basis and very occasionally wetting. How do i get him to willingly use the toilet again and should i punish the soiling? at the moment he is an only child but our second is due in 7 weeks....could this be a contributing factor? any advice or similar experiences with solutions would be most gratefully received. Thanks.