My cat is just over 1 year old now, and when we first got him he was really sweet...he used to jump up onto your lap and curl up to you as well as if I was kneeling down and had my stomach towards the floor, he'd jump on my back and almost nudge his nose against my face when I looked at him. But now, over the past months he's stopped doing all that and never sleeps on my lap even if I put him there and hold him down. He goes onto one of the dining room chairs instead. I really badly want him to be all affectionate like that again as I'm alone in the house sometimes and it's nice to have warm company if he's inside. Are there any ways to make him want to stay on my lap or are there any reasons why he's stopped this? Thank you!