Is there a way to make my cat a lap cat again?

I've had my boy cat now for 10 months! He will be a year old next week. In the first 2 months of having him, he never left my side/my lap. I don't know whether he's more comfortable/confident now in his surroundings, but he's not so much in need of my lap at all apart from sucking/kneading 5 minutes a day then he jumps off! My love and attention hasn't deteriorated since day one. I love him to bits, but he seems cold though he loves play sessions and being petted.