Hi Chonk's Mum!!! Welcome to the forum
My experience has been that Fluffy has become more and more affectionate every year. He was a timid kitten and cried when he first came out of his carrier. I tried to comfort him by picking him up and cuddling him - but he didn't want me. He wanted his mama and his siblings. I was used to dogs who love physical affection and I realised I was guilty of over-handling Fluffy and "crowding" him. So - I stopped trying to pick him up, I stopped trying to pat him and it worked for us.
He started walking all over me (literally!!!) when I was in bed or sitting on my chair. It took every ounce of willpower I had not to pat him, but it gave Fluff the safety and security to approach me. These days he stands in my lap facing me and imperiously demands a massage. Naturally I oblige!!! However Fluffy is not what I would call a lap cat. He very rarely sits in my lap and sleeps. For the first two years of his life Fluff would never permit me to pat his belly but in the past year he rolls over and allows me to pat him on the belly. I never thought that day would come - but it did - and I was so happy...
Chonk obviously loves you and has that ragdoll bond of wanting to be near you at all times. With Fluffy that bond has deepened each year and I have a feeling the same thing will happen with you and Chonk. I'd love to hear updates of Chonk's adventures and of course we LOVE photos!!!