I have done house sitting for owners while they are away. I would send them pictures through out the day and keep them posted . Take them out atleast 3 times a day. Walking dogs I generally would do 30 minutes -1 hour because I like to bond with the dog and play as well as walking them. With real young puppies I gauge them into walking them.. guide them with some treats along the way. Explain to them this outside is “potty”. Keep reminding them through out the walk and give them the “ good job” “ you did it ! “ “ potty outside!yay! “ . Then hand a treat . I enjoy helping all dogs from different ages!! When they are with me you won’t regret It. !