switching back to wet feeding...

When I was on vacation, I let my boyfriend feed Jake his dry royal canin kitten food only and stopped the wet feedings because he thought that would be too much hassle and he's just such a lazy bum that I didn't even bother fighting for it Now I've been back for about 2 weeks and I still haven't started wet feeding because I'm afraid that Jake might get diarrhea from a new to him food. What are the dangers? Jake has a very ssensitive tummy that switching from one food to the other definitely gives him diarrhea for quite a while How do I re introduce it to him?? Any tips would be appreciated ..Thanks

try a teaspoon at a time ... ask about apple pectin it often will prevent stool issues