So I’ve asked my breeder when my pup was 2 weeks old to have him on pedigree puppy food as that’s what I wanted him to eat. She agreed with this and informed me that she was feeding him pedigree. To find out he has an upset stomach and straining due to different foods. As she has only just come forward and said he’s been on hero puppy food for 6 weeks but I think he’s been on this the entire time. How long will it take for him to adjust to pedigree as it’s been 5 days now and still runny poos.