Yep just takes time. I'm sitting at the computer right now with two on my lap. My older one Belle and one of my pups Bailey. About a 1/2 hour ago it was Belle and Cinnamon (the one Belle didn;'t like as much in the beginning

I try to type and pet each of them at the same time.
This cuddle at the computer thing seems to have helped them too. Its so cute to have them sleeping curled up together on my lap.
I think I need a bigger lap. hahaha NOT....gotta keep on that New Years diet.