You are the leader. As the leader, you control all the resources. Attention and love is a resource (obviously, a very valuable one to Dewy).

Instead of Dewy freely grabbing your attention, you make him earn your attention. There is no hogging of attention, either. If one dog starts to act out of line by hogging your attention and/or acting jealous, walk away from that dog. S/he has to learn that YOU control your own attention, not him/her.

This doesn't mean you can't love on them and give them belly rubs and pets. It just means that YOU initiate it all and YOU end it all. So YOU rub Dewy's belly when you want to. You end it when you want to. If Dewy is leaning against you and jumping into your lap, get up and walk away from him. This is something called NILIF, or Nothing In Life Is Free: http://k9deb.com/nilif.htm