Hi, we got our puppy a couple of weeks ago and when he came to us his owner gave us a bag of dry adult food she'd been feeding him We bought some dry puppy food and gradually changed it over the course of a week as advised. He then got diarrhea and had very smelly wind, and then was sick oce 2 evenings ago. So yesterday, we just gave him boiled chicken and rice and his tummy seems much better. So today we've been gradually adding some of his previous puppy food to the rice and chicken, and the smelly wind is back!! Were thinking we might try a different puppy food brand but my query is, should we just start afresh with a new brand, or should we get him back on his previous brand and then ween him onto the new stuff over a few days?