Hi, we have yoda now about 2 weeks. He is 6 months old. He does go on puppy paper. Slips alittle. I try to take him outside, but he shakes and pulls to go back up the stairs to go inside. He did pee outside twice but has not since. We have him in a fence area in our kitchen right now. We do have a 7 year old maltese that we are trying to introduce slowly to each other. Do you have any suggestions on how to train on going outdoors?