Originally Posted by westofyou
Just keep a door betweeen them, maybe give the kitten a blanket that is fresh and let the kitten sleep on it, then the next day let the other cats smell it (they'll know it's from that thing on the other door) maybe do the same for the kitten.
Be slow in the introduction, 3 is a new dynamic, sometimes one of them gets peeved.
I'll do this. Thanks, woy.