I adopted a 7 month old doberman mix. We are doing well with crating and peeing. However, he consistently takes forever to get around to pooping. I mean we've been out for over an hour before, he'll get so close as squatting but gets distracted by everything. And I know he has to go. We can go back inside and catch him going to squat, get him outside and it's another 20 min ordeal. Any suggestions?