Is the food not suiting ? If it is fine , I wouldn't change it but if its causing any problems , like runny poo , then have a look at whats available , and pick out the best that you can afford to feed . Try to find one that has meat listed as the first ingredient , and not wheat .
If in the UK have a look at www.allaboutdogfood.co.uk . The site provides info on all food available in the UK and has very useful information on ingredients and to help dog owners understand what a food contains. Which food you choose really depends upon the quality and price you are willing to/can afford. As a rough guide I would search for a food with at least a 4 star rating and then base upon price, ingredients, ease of availability (available in pet store or delivery only). With a puppy I would also be looking towards the change from Puppy to Adult and ensure that there was something to move on to.
