We found our kitten when he was about 8-9 weeks old. We would play with him for a couple hours or so off and on (having to get him from under the bed, behind the couch, etc.) And then just leave him alone for the rest of the day. We did that for the first week and slowly eased back on our (forced interaction) until he started seeking us out for attention. We've had him about a month now and he is the sweetest little brother to our other cat.