Can I just add my 2p worth to this..

at his age, 4.5 months RC Babycat is not right for him, the breeder should have changed this around the 10 - 14 week stage at the latest, he should have been on the Kitten 36 which is the next one up.

James Wellbeloved is the same company as Royal Canin. So feeding JW is not going to cause many problems.

Re Kitten food, well its a debatable one.. The more expensive lines of food, yes they do make a difference, but when you get down to Whiskas etc., I dont approve of the kitten food at all, unless its Whiskas loaf for kitten, which I have used to wean orphan kittens.

Felix kitten, is just the regular line cut up smaller, in my opinion...

I personally would not be feeding sachets of food, when the dry food is going to cover his every need.

Kittens reacting to a new home is normal, most breeders or rescues warn new owners of this, telling them to expect a loose stool or a vomit. To the kitten, everything is new, new home, new surroundings, new people, all of which is strange and could, to them bring new dangers... all the things mum warned them against.

So unless it goes on for a couple of days, I wouldnt be too concerned, and looking at that photo, that kitten is a picture of health.

So, Im confusing you even more by saying stick with JW.. and water..

Changing foods causes tummy upsets..